My favourite genre is rock/pop, but I like different music for different purposes. If I'm relaxing in a chair or on the bed, then I like classical music, but if I want to dance about, then pop/disco songs from the 50s-70s are best.
Reggae and hiphop make me happy. Punk's good for when I'm angry. I also like a bit of pop, some silly mashups (not a genre but I like them), some jazz, blues and the odd bit of classical. Trance music is the best for running to.
I'm a big fan of indie rock, folk and folk rock. I'm also a big fan of supporting my countries musicians, most of my itunes library consists of Canadian bands.
You can't beat 70's & 80's music if you grew up in that era like I did. It always brings back memories of my childhood. I also love easy listening music like the Eagles, Neil Diamond etc Mandy E.
Spanish Flamenco, Light Classical, some film & musicals' soundtracks, Cuban, Argentinian, great %age of the 50's & 60's music, which, like classical, will be all-enduring!