I'm not really ashamed of any music I listen to.
Some of my playlists:
Beer Drinkin' Country (self explanitory)
Having a Bad Day (rock like Disturbed, etc)
Weekend (Rap and Pop - think NightClub Dance Music)
Ridin' Music (Smooth Slow Rap - something you just chill and bob your head to)
Flamer (uhh...Backstreet Boys and similar -- friend came up with the name)
Classic Rock (self explanitory)
Girly Country (for my wife - country love songs)
Doin' It (uhh..you know...for when your {insert playlist name here})