Finally saw this today, having somehow remained unspoiled. Against all odds, I thought it actually lived up to its hype.
Bradley Whitford and Richard Jenkins were just perfectly cast.
* Fran Kranz's Transformer Bong. (I guarantee someone is sitting in his dorm room working on building a real one right now).
* The speaker phone.
* "I'm drawing a line in the fucking sand. Do NOT read the Latin!"
* Anna Hutchison's legs. Seriously, where did she come from? Girl can wear a pair of shorts.
... but I agree with whomever said that the best moment was.... *ding!*
And the funniest thing: Joss Whedon is not ruling out a sequel.