It's a who's who of young comedy in the new movie "This Is The End". Seth Rogen, Micheal Cera, James Franco and many more star as themselves in this end of the world comedy. More after the jump.

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Is it aliens?  Did I see a dinosaur?  Who knows what is bringing about the end of the world, but it's putting some of your favorite actors at risk.  It's the stars of Superbad, Pineapple Express, Knocked Up, Your Highness, 21 Jump Street, Finding Sara Marshal and even featuring the girl from Harry Potter.  You'll probably have to watch this trailer twice to catch the jokes and a second time to catch all the actors.   This is naughty and red band, but check out the trailer to "This Is The End"

To help promote the movie, the guys also made a fake trailer for "Pineapple Express 2" Check it out: