What do you like?
I'm into Punk and Metal, but I have some odd favorites from other genres. I'm not strictly about those, but they are the ones I'm most passionate about.
For Punk: '77-style Punk, Horror Punk, Deathrock, '80s Post-Punk, Oi!/RAC, '80s Hardcore, Post-Hardcore, Japanese Hardcore, UK82, Thrashcore, Crossover Thrash, Sludge, some Anarcho-Punk, Metal-oriented Grindcore, Metal-oriented Crust, some Grunge, some Powerviolence
Indifferent towards: Cowpunk, Beatdown Hardcore, Melodic Hardcore, everything else not listed
Dislike: Ska Punk, Metalcore (very few exceptions), Psychobilly, Riot Grrrl, Folk Punk, Queercore, Pop Punk, Post-Punk Revival, nu-male shit
Depending on how you feel about New Wave, I'm into the more Post-Punk oriented bands along with Coldwave and Minimal Wave. There are some New Romantic / Synthpop bands I like, but they're the exception, not the rule.
For Metal: '70s and '80s Metal, NWOBHM, Doom, Sludge, Thrash, Black, Gothic, Glam, OSDM, Power, Speed, Death/Doom