Classic: The Music of My Father's Generation
Punk, New Wave, Post-Punk, Etc.: If it has a synthesizer it probably belongs here
Bear Rock: The stuff that maybe got played on 98.9 The Bear, but not on X103. Warning: There will be no Hair Metal here. Just not a fan.
Slacker: Grunge and Post-Grunge, Gen X in all its slacker glory. This ain't your father's rock and roll.
Hipster: Indie Pop, Chamber Pop, Neopost Grunge, Post-Punk Revival - the kind of stuff you profess to stop liking once it goes mainstream, the kind of stuff that was never meant to be on vinyl but is because its trendy.