8 People Who Will Ruin Your Party.
The extra ones in the comments at the bottom are even better.
You forgot #9 - Music snob
Where he’s found. Hovering by your cd player all night. Bitches to anyone in earshot about how bad your collection is. Loudly mentions band recently featured on Pitchfork, as though anyone gives a shit about Pitchfork. Comandeers the CD player and does the best he can with your crap collection. Bums cigarettes all night then complains that no one smokes American Spirits. Drones on and on about this kick ass band he saw jam at some shit hole and how that’s real music. Has serious case of short term memory as everyone at the party remembers when he was into Limp Bizkit.
Aside from the Limp Bizkit and Pitchfork bit, I admit I've been this on occasion.