Anime: X, Hellsing, Petshop of Horrors, Lamune& 40 Fire, Di GI Charat, Devilman Lady, Legend of Basara, Bleach, Fushigi Yuugi, Madoka Magica, Naruto, lots more!
J-Rock: Your basic staple VK& rock bands, etcetc D'avid, Pleur, Fanatic Crisis, Rouage, Buck-Tick , Janne da Arc, Lareine, Siam Shade, LunaSea, L'arc~en~ciel, XJapan, etc
While I've fallen out of the music scene, I still enjoy the CDs I picked up when I was into it a few years ago
Video Games: Mostly RPGs.. my ultimate favorites are Final Fantasy VI, Secret of Mana, Suikoden I, II &V, Grandia I&II, and most of what Nippon Ichi releases.
Ultimately, my costumes are the best overview of the kinds of things I like. 95% of what I do is for great love of a series or character, so you can get the general idea of my interests by the series and characters I cosplay.