I like pretty much anything, with some exceptions. It'll be quicker to tell you what I don't like rather than what I do like.
Like Teal, I quite like happy stuff, but not in the Shitney Spears or Abominable Kitten league. (I actaully have Kung Fu Fighting on CD - how sad is that?!!)
I also dislike most rap and hip-hop. It's rapping with swearing in it that I dislike most; stuff like Will Smith is ok. I also quite like 57th Dynasty (v. obscure hip-hop act), and Eminem's always good for a laugh.
I hate country and western, and the pop end of the dance spectrum (Spice Girls, Eternal etc, yuck!). Oh yes, and garage. I used to like it, but it's too manufactured now.
I do like most other sorts of dance music; metal [NOT nu-metal! Nu-metal 'artists' are a disgrace to the metal genre, and they're just pop bands who think they're rock bands], preferably death metal or thrash metal; electronica; techno; hard house; progressive house; acid house; bigbeat; rave, and so on.
I also like classical; Jarre (his music doesn't fit into any category that I know of; it's a rock/classical/electronica fusion); some indie; reggae (the happy sort); calypso; soca; and most rock.
My favourite singers would have to be David Bowie and Annie Lennox. They both have beautiful voices and can sing really powerfully. I also like Eric Clapton, Paul Simon and Shirley Manson; they're good singers.
As for bands, in the strictest sense of the word, I like the Beatles, Dire Straits, Wet Wet Wet, Crowded House; Garbage (I think they play instruments); and the Rolling Stones.
If we're allowed to count computers and sequence work as being in a band, then I like (actually these are all duos [except the last four]; so 'band' might not even be the right word even if they did play 'real' instruments) Fluke; the Chemical Brothers; Basement Jaxx; Leftfield; Orbital; Autechre; Future Sound Of London (foursome); the Prodigy (were a foursome, now a threesome); CoLD SToRAGE (solo) and the Space Raiders (threesome, authors of the song Middlesboogie
).
I also like lots of obscure artists, and so I won't bore you by listing them all.