Seth Rogen, James Franco, Jonah Hill, and more real-life Hollywood buddies didn't have to dig deep for comedy inspiration in this apocalyptic movie — they play themselves, and for guys like this, that means they make fun of themselves plenty too. It's meta, very raunchy, and, with the end-of-the-world scenario, pretty creative too. Remember how Jonah gets raped by the devil? And Danny McBride becomes a cannibal? So wrong, and yet so funny.