Generally, I prefer reading Harry Potter fanfictions, but I am willing to beta for any of the books and TV shows I have listed. I haven't read Everworld in awhile, so I'd be a bit rusty on that. Some TV shows I have listed, I haven't finished the entire series so I may not be informed of all characters and events, but I'll get there eventually.
I don't usually read romance fics, but I enjoy those stories that focus on the developement of the relationship. I am willing to beta the occasional smutty, kinky, and/or plotless fics, though. Not a lot squicks me. Preferred ships for Harry Potter are: Severus/Harry (Snarry), Severus/Remus, Severus/Hermione, Remus/Sirius. Ships I also like, but am a bit more picky about enjoying are: Harry/Remus, Harry/Draco.
I really enjoy long stories. Plot twists that keep me at the edge of my seat wondering what is going on make me very, very happy. I also like oneshots, so a fic of any length is fine by me.
I love crossovers. I like mixing worlds that shouldn't make any sense at all and doing my best to make them work. Crossovers that I'm especially interested in are Harry Potter/Stargate, Harry Potter/House M.D., Harry Potter/Dark Angel, Harry Potter/Animorphs, Harry Potter/Buffy the Vampire Slayer, Harry Potter/Pendragon, Harry Potter/Charmed . . . pretty much Harry Potter mixed with other worlds that I enjoy. If you're interested in writing a crossover like that, but are clueless as to how to make it . . . well, somewhat 'realistic', I'm very willing to help. I like puzzles like that.