Hello. I'm very pleased to be here - I've been reading fanfiction for many years, and I'm glad to contribute a few stories of my own, finally. I hope that you will glance over my 'favorite stories' recommendations before you leave, since there are so many wonderful stories out there! It was a pleasure to make a list of some of the ones that have really impressed me, and I have enjoyed stories in many fandoms for which I have never written myself. My tastes run the gamut, but I would sum them up as follows:
Harry Potter (Snape-centric, Snape/Lily, and Lupin)
Sherlock Holmes (Watson-centric, emphasizing friendship more than the mysteries)
Discworld (Vetinari)
Star Wars (Anakin, Vader)
The Man From UNCLE (Illya-centric, but you really need them both!)
Firefly (Simon-centric, especially stories about his relationship with his sister, River)
Batman (I love Dick Grayson, who was Robin #1 and is now Nightwing)
Buffy the Vampire Slayer (Spike, Spuffy)
Highlander (Methos)
Babylon 5 (Lennier)
I have recommended stories for many of these fandoms, though not all, and I'm always on the look-out for more. I hope you enjoy everything!