This is a Doctor Who and Big Bang Theory crossover! It's a regular day for Leonard, Penny, and Sheldon, but what happens when a mad man with a blue box appears on there street? Will they go on adventures with him? Or will they ignore him? The answer is in the story! Leonard/Penny and 11/Clara. Title is probably going to get changed. If you have any ideas msg me!

In a regular day at the Cheesecake Factory, Penny sees herself serving one of her favourite actress, Billie Piper. I've been having this idea for months, hope you enjoy! Oneshot (because I finally realized that I can only write those kind). Crossover. I think it's an AU…

Like my Immortal Beloved bits in my Buffyverse stories, these are fragments and short bits, some longer…Just to fiddle with ideas, possibly forming longer tales later

Penny is picked up by the TARDIS, and joins the Doctor on a mission to save an alien planet from destruction. Penny and Sheldon as the Doctor.

Ficlet. The Doctor meets Sheldon Cooper, and it's not pleasant.

10/Rose. Big Bang Theory Crossover. Sheldon, Leonard, Howard and Raj are visiting London when suddenly they're caught up in the events of The Stolen Earth. FINISHED.

The guys are playing Halo when a mysterious blue box shows up in their living room. Can they figure out how to help the doctor? SUMMARY SUCKS BUT GOOD STORY1 PLEASE READ & REVIEW!

TBBT/Charmed/DW: Two demons want to kill Sheldon. "Why?" you ask. Sheldon isn't Sheldon. Sheldon has a fob watch. And to top it all off, he hasn't much memory of his life before. Oh look! A blue box! Yay! Watch for angels. Don't blink.

Dr. Sheldon Cooper has a strict routine for his Saturday mornings. What starts as a programming error turns into quite a surprise.

Penny doesn't believe in those science-fiction monsters...perhaps she should! After she walks into the gang watching The Impossible Astronaut, she experiences her own close encounter.

Written for ladyhouston and the Write For Relief meme. Prompt was: "Turns out Sheldon's a Time Lord. He takes Penny along as a companion."

"And his assistant, Doctor Sheldon Cooper". The Doctor introduces Donna to Leonard and Sheldon. Still WIP

What happens when Leonard meets the Doctor? COMPLETE

aka Brilliant Collision - A familiar blue box lands in Leonard and Sheldon's living room. Why is it there? Are the Doctor and Donna now trapped forever in the wrong universe? - Epilogue now up!