I'd say my general music tastes are adequately documented in this thread. To summarize:
Rock/Rock & Roll from the period between 1967 and 1978 (what some might call "Classic Rock").
Motown from the late 1960s to mid-1970s. (Arguably, this genre falls squarely within Rock/Rock & Roll.)
Funk (which somewhat overlaps Rock & Roll and Motown)
Contemporary blues (even though, for me, Robert Johnson remains the king despite playing early Delta blues on a ratty hollow-body guitar).
Jazz: Big Band/Swing, Bebop (and, yes, the music from Cowboy Bebop), contemporary. I'm not a huge fan of avant-garde jazz, however.
European/American classical music.
Indian classical music (both Hindustani and Karnatak)
My guilty additional pleasure is listening to disco music, which I despised when it was at its apex of popularity. I also now appreciate the musicality, especially the layering, of Britney Spears' Toxic, which I detested when it was a hit. In a similar vein, I hated The Police when they were big (even though I dragged myself to one of their concerts) but I quite like them now.
Guilt? Kublai Khan knows no guilt.