When the wife is around: Opeth, Danzig, Black Sabbath w/Dio, Pink Floyd, Alice in Chains, Nirvana, CoC, Pantera, NIN, Ministry, Static-X, Iron Maiden (not her fav), Type O Negative, Mudvayne, old Marilyn Manson, Meshuggah, Hendrix, Rush, Suicidal Tendencies, Sublime; to name a few.
Can't forget Bach, Beethoven, Rachmaninoff, Vivaldi.
When the wife is not around: Behemoth, old Cradle of Filth (last 2 albums suck!), Decapitated, Entombed, Nile, Graveworm, Carcass, Six Feet Under, The Project Hate MCMXCIX (Can't stop the Hate!), Nasum, Malevolent Creation, Belphegor, God Dethroned, Dark Funeral, Mayhem, Hate Eternal, Gorgoroth, Obituary, Deicide, Morbid Angel, and Metallica - who my wife despises (lucky for her I love her! <-Actually, considering my some of my extreme tastes in music, some might consider this to be an ironic statement

).
While to most people this list sounds pretty disgusting/disturbing; there are plenty of black/death metal bands that I think SUCK as well. I try to mix it up and listen to a lot of everything.