Metal is perfect for parties, if you think not you got the wrong ideas about Metal. You wanna listen to gangsta rap, r&b, emo, and some post-disco garbage? I guess if that's your thing.
Some of these songs would be best only for a serious metal party
Dark Tranquillity - The Sun Fired Blanks, some other songs
Soilwork - Steelbath Suicide, Figure Number Five...
Witchery - Wicked Spirits, Plague Rider, etc...
Nightingale - Falling, many other songs
Iron Maiden - alot of their songs
Megadeth - Wake Up Dead, Blackmail the Universe, Peace Sells, etc etc
Steel (lol)
Darkthrone - Cult of Goliath maybe other 'newer' songs
Satyricon - K.i.n.g. and other songs
Arch Enemy - Angel Claw and other songs
Metallica - some of their songs might be good
Type O Negative - some good songs
Ozzy - some good songs