In response to a challenge, "Write 10 different categories of fic, in as few words as possible." I did Naruto/Sasuke, Sasuke/Sakura and Naruto/Sakura. (I fail at short, btw.)
Warning, one of the categories is "smut".

NaruSasu

1. Angst:
"You -- I'm... sorry but -- you're like my brother, I never thought of you like that."

2. AU:
"Because I'm the enforcer of the Konoha pack, asshole!"
A growl rising in his throat, Sasuke starts circling the other alpha, body tense, black fur bristled. "Yeah? Not for long."

3. Crack:
"... but what do you mean you've always been a girl? You can't be a girl, you're my RIVAL!"
As Yamato cringed, Sasuke and Sakura declared a temporary alliance to fix that little misconception.

4. Crossover:
"My, my, Honored Grandfather," Kurama purred; "Whatever happened to you?"
Naruto blinked at the pretty redhead in confused interest. "Do I know you?"

5. First Time:
After their accidental kiss Sasuke checked his mouth for wobbly teeth, in case Naruto had knocked one loose. There weren't any, but there was a bruised area on the inside of his lower lip.
He kept tonguing it at odd times until it healed.

6. Fluff:
Sasuke gave a half-awake grunt and frowned blearily at his boyfriend. "If I buy you a duck plushie, will you leave my hair alone?"
Naruto pretended to think about it. "Hmm... Nope." He started petting the back of Sasuke's head again. "You're the only duckbutt I'll ever want. At least in bed. -- Ow."

7. Humor:
-snrk.-
"Stop laughing."
-pfft.- "I'm not."
"Yeah right. I'll punch you if that smile gets any wider!"
"Oh, don't damage your magnificent leaves on my behalf, dandelion-san."
Naruto tugged at the edge of his crown of fake petals and kicked Sasuke with a root-like shoe. "Yeah, laugh it up, Prince Dickhead. I'm not the one with the onstage kiss."

8. Hurt/Comfort:
Sasuke stared down at their linked hands, slick with blood, caught in a white-knuckled grip around each other. The canyon still yawned beneath them, but the ledge was sturdy.
"You can let go now," Sasuke said. He was trying for dry; it came out toneless.
Naruto closed his eyes. "I will if you will."
Neither of them did.

9. Smut:
They can't come to an agreement. So their first time is on the training field where their tenth spar ended in a draw.
Rough bark bites into Naruto's shoulder blades as Sasuke moves between his thighs. It takes him five thrusts before he gets used to it and can concentrate enough to finish the hand seal he's shaping around Sasuke's back.
His twin joins them, mouthing Sasuke's seal as Naruto tugs on Sasuke's head to pull their mouths together, filling him like Sasuke fills Naruto.
The clone explodes when he comes, and Sasuke laughs rough and mean in his neck and whispers things about Naruto's endurance.
He sings another tune after Naruto's tenth Bunshin has had his turn.

10. UST: (unresolved sexual tension)
"...Since when does he wear kimono anyway, huh Sakura-chan?"
"Ehh. It's not a bad look on him."
"It's indecent! It's -- I saw a nipple!"
Sakura perked up, delighted. "So you did? Lucky. They're nice nipples, aren't they?"
"I guess they're not b- SAKURA-CHAAAN!"

SasuSaku

1. Angst:
"What do you love more, Sasuke?! Me, or my ability to bear you children?!"
There was no answer. It was answer enough.

2. AU:
Sakurai Haru-kun was in love with Uchiha Satsuki from the very first day. But from the day she slipped through his guard and landed a punch on his jaw that threw ass-first in the mud and made him the laughingstock of his male peers, he decided she would be his rival too.
It took him seven years, but the day he won he asked her out on a date.
The next day she won again, but after that she said yes.

3. Crack:
"... Sakura, leave my nailpolish alone."

4. Crossover:
Perhaps it was because they were two in the snake's mouth -- Sasuke tightly wrapped around Sakura's limp body, cursing himself for the impulse that made him grab her, the inability to let her die -- but when they materialized again and he crawled past his summon's teeth it was nowhere he'd ever been. Vaulted ceilings, damp air, grey stone. There was another dead serpent, though, big as Manda -- dead and rotting, and a large stain of blood and ink on the old stone floor.

5. First Time:
A soft chuckle. "Don't worry. I'll be gentle."
Sasuke growled in outrage and pressed Sakura against the wall. "That's my line."

6. Fluff:
"... Do I really have to say it?" Sasuke said.
Sakura planted a fist on her hip and cocked her chin, a wide smirk on her face. "Yes."
"Fine." A sigh. "You've gotten strong, Sakura."
He rubbed the bruise on his jaw, half-sulking and half-rueful. She reached up to it, and he leaned into her hand with a little sigh.
"Yes, deep and large; it's a nice bruise indeed," she said with professional appreciation.
"I'll vouch on the depth of it," he muttered. It twinged every time he opened his mouth.
Sakura leaned in and dropped a smug little kiss on his mouth. "I'm not healing it, by the way."
Sasuke growled half-heartedly. He guessed she deserved to brag for a little while.
"...As long as you don't heal those either," he said. Then he wrapped an arm around her waist to reel her in and left bite marks on her shoulder.

7. Humor:
"Sasuke-kun, you know I love you. Don't you?"
Sprawled on his back, Sasuke blinked up at Sakura, vaguely embarrassed and somewhat puzzled. Her tone had been... strange. Then she was straddling his hips, which was a little distracting.
"I would do anything for you... But if you destroy my silk panties again, I will end you."
She shifted in his lap. "Mm-hmm," he hummed with a hint of smugness, hands traveling up her thighs.
Sakura leaned down, so that her hair fell against his cheeks like a curtain, and her voice turned into a purr. "Do you want to know how I will end you? I will take those destroyed panties..."
"Mmm?"
"... And wrap them around your neck and strangle you to death."
"--gghk."
She grinned at him with disturbing cheerfulness. "But I'm sure it won't happen again, dearest! After all, it was an accident."
"-can't breathe-"
"Yes, that's an accident too."

8. Hurt/Comfort:
Sakura stood at his side as he lit the incense, staring ahead so she wouldn't see any wetness in her husband's eyes.
When they went home she draped herself against his back and she didn't say anything, so he could keep pretending she didn't know he was crying.

9. Smut:
She dug her hands in his hair, took fistfuls of thick inky locks, and she pulled his head back. He was gorgeous, throat arched -- offered -- eyes dark with an intensity that went past desire straight into need.
She kissed him with bruising force and pushed herself all the way down.

10. UST:
He'd noticed she had grown up, slender and quick, long white legs, perky breasts, but he didn't start actively wanting her until she planted a boot in the middle of his chest and slammed him through two feet of concrete. Standing over him with the sun behind her head, he could see nothing but strength and pride and that skirt slowly fluttering down.

NaruSaku

1. Angst:
"I've been trying my best, but I still miss him. I can't just --"
"Me too."
"I think... I think I always will."
"Me too."
"...You're the only one who understands, Sakura-chan."

2. AU:
"Whatcha readin'?"
Sakura eyed the blond stranger who'd slipped in her cafe booth. She didn't feel like being rude today, so she tilted up the cover of his book to show him. He laughed when he read the title. He had nice blue eyes, she noticed, and his laughter held no malice at all.
"Vampire chick lit? Really?"
"Hey, it's great for escapism," she retorted, only a little defensive.
"I'm sure real vampires think so. All that hype about silken shirts and raven locks and alaba-something skin..."
"Oh-ho, someone's a connoisseur in vampire chick lit, I see."
He flailed his hands quickly, horrified and amused in equal measures. "I was just curious about them! And the ones with wild tormented artists and gold-hearted hustlers and CEOs who are so successful they can afford to go a-courting all day. I bet it gives real vampire CEOs hives."
"That's exactly why they're so fun to read," Sakura replied, grinning until her sharp, white fangs showed.

3. Crack:
"... Okay. Tell me again how you broke your penis and then I'll see whether I feel like fixing it."

4. Crossover:
"A-are you a Slayer?" the stranger asked, eyes wide with shock.
Sakura tilted her head in confusion. "Not to my knowledge." Then she punched him through the chest and watched him burst into dust just like the first assailant had.
Naruto sneezed. "Weirdest bloodline ever."

5. First Time:
"You broke my bed," she muttered, voice blank with utter disbelief.
Naruto grinned sheepishly and bounced a couple of times. "Mattress is still good!"
The mattress started listing to the side with little warning. Sakura slipped along the sheets until she collided with him; the light impact finished shoving Naruto down, and then they spent a minute or so squirming against each other and trying to straighten up. She pushed herself up on her arms in the end, but he didn't. He was trapped there, she realized, between the wall and the tilted mattress, tangled in the sheets, hindered by her weight.
"You broke my bed," Sakura repeated with dangerous softness.
She sat up across his hips and growled down, "You're going to pay me back, and you're going to pay me now. I swear Naruto, the only way you'll leave my room alive is if you leave me too exhausted to kill you."

6. Fluff:
"Say AAH," Sakura instructed.
Naruto was torn. Sakura-chan feeding him! ... Asparagus.
In the end he opened his mouth and swallowed, of course.

7. Humor:
"... That Kakashi plushie is the cutest thing I've ever seen in my life."
"Sakura-chan, it's not a plushie! It's a TARGET!"
"So now you sleep with your targets? That's going to look nice on your ANBU sheet."

8. Hurt/Comfort:
"It's okay Naruto, it's okay, I'll have you free in a minute -- just don't move, it'll be okay--"
He chuckles, rough and pained. "Yeah. S'okay. You're the best healer in the world. The hottest, too."
"Are you flirting?! It's really not the moment--"
"...Heh. 's the best moment!" Bloodstained grin. "Like you better angry than scared."

9. Smut:
When she sees an hourglass figure and hip-length gold hair amongst the women reaching the hot springs, she stiffens, and her hand instinctively feels around for something to throw. But then she sees he's not looking right or left; he's just looking at her. His full lips curve into a secretive smirk as he slips in the water beside her. Sakura sinks to her chin in the bubbling water and glares for all she's worth. It's too late to make a scene, sadly enough.
Then long legs tangle with hers and a hand wanders up her inner thigh, and she closes her eyes and tells herself the red of her face will be attributed to the water, and no one can see anything past the bubbles anyway.
She spreads her knees and smooths away all facial expression. It's too late to make a scene, after all.

10. UST:
She doesn't see him as a man. She knows he is. But he's not 'a man', he's 'Naruto'. Silly, annoying, steadfast, funny. Adjectives for a brother, maybe. For a teammate, a best buddy.
His body cuts through the waterfall like he barely notices its strength, tons of water breaking open on his shoulders. His flat, darkened hair doesn't take attention from his widening jaw anymore -- or from his neck, his wide shoulders, his defined body.
She pretends her nipples have tightened with painful swiftness only because of the spray and the wind. But she's not cold, not cold at all, and it has little to do with the sun and a lot more with the way Naruto's bare arms rise overhead to punch through the waterfall again.

Crossovers were Yuyu Hakusho, Harry Potter, and Buffy the Vampire Slayer.