Seeking a Friend for the End of the World is a new favorite starring Keira Knightley and Steve Carrell. Our two protagonists pull over to the wildest restaurant where the doomsday party just doesn't seem to stop. I don't want to spoil this scene if you haven't gotten around to seeing it yet, but things get a little frisky up in there.
The classic alien invasion flick Independence Day featured a rooftop party on top of the US Bank Tower in Los Angeles. These partiers might have not realized that they were greeting the end but what did they really expect from a giant spaceship? The moral is if you really believe in the end you should probably surround yourself around like-minded individuals.
Get real down-to-earth and embrace the end Melancholia-style, only for the diehard new age spiritualists. This bare bones party requires only some sticks tied together into a tee pee and your closest doomsday buds. Hell, this party might even be better done solo meditating under the protection of your tee pee.