Anime (of course), manga, Japanese culture, writing, sketching, reading (especially fantasy and scifi of the Neil Gaiman and Terry Pratchett variety), video games, movies, conventions, tabletop roleplaying, socializing, the intricacies of the English language and those that respect it.
Edit: much more recently, board games.
I'm bringing my Kakouton (Ikki Tousen) "cosplay" (which consists of a knit hat, dogtags and an eyepatch) and might as well snag my sunglasses and headband to do Harima Kenji. =P
Thrift store cosplaying ftw XD