I don't really believe in guilty pleasures. There's music you like or you don't. And the way guilty pleasures as been turned into a thing is annoying too. But then we quite often have Magic on in the office so I may not be the best judge.
There is one album that sometimes makes me a bit sheepish though - Tears For Fears: The Hurting. Not because of the music which is superb (some of the best drum noises and programming ever) but because I find myself wandering down the street singing along and the lyrics are so resolutely, gothicly self-pitying. And those glorious big tunes can't help but get you singing them at the top of your voice. YOU DON'T GIVE ME LOVE, YOU GIVE ME PALE SHELTER.YOU DON'T GIVE ME LOVE. YOU GIVE ME COLD HANDS.