Wow! Great to see so many anime fans here!
My top 5:
"Fullmetal Alchemist"
"Angel Beats"
"The Melancholy of Haruhi Suzumiya"
"Azumanga Daioh"
"My-HiME"
Also really great to see all the fans of my absolute favorite film director, Hayao Miyazaki. (When I've finally posted enough to get the privileges required to upload an avatar, it's probably going to be of Nausicaa from "Nausicaa of the Valley of the Wind...")
Right now, ever since I officially started gender-transitioning, I've been watching a LOT of girly anime series... I'm rewatching Sailor Moon from start to finish, am also watching Cardcaptor Sakura, Princess Tutu (WOW, that show is awesome!) and Revolutionary Girl Utena.
Needless to say, I've always loved anime. I grew up watching Sailor Moon, DBZ, Pokemon, and Yu-Gi-Oh, and then it blossomed into full-on fandom by the time college rolled around. Again, great to see so many fans!