No need for a recap, I'm sure everyone here has seen this movie a million times like me. It's an all-time favorite, a great comedy that actually takes the effort to extend its wit to the visuals.
Two things I love about this film:
1) It's structured as a series of densely layered comic setups and payoffs, both obvious and subtle, unseen in this level of detail and brilliance since Back to the Future.
2) The final act, while still hilarious, also succeeds as horror. It's unafraid to kill off major characters that you've grown fond of, and as a result builds some very real tension.