Shawn of the Dead.
If you haven't seen this, get your ass to the rental store and get it. This was so much better than "The Bourne Conspiracy"--which was the wife's choice--it's not funny. My wife who thought she wouldn't like it, ended up watching it and pointing out things that I was missing.
It's simultaneously a great comedy, a great horror flick, and a great romance. It helps if you're an Anglophile because if you don't know much about the UK you'll not get a lot of the jokes, but it'd still be worth watching.
Oh, and if anyone can tell me if the line "Well, they were a bit bitey" was from another film (I'm envisioning another British horror spoof like say "An American Werewolf in London" but I can't place it there) or if I'm just remembering the line from the TV ad, I'd greatly appreciate it.
I returned it today and got "Garden State" and "Mean Girls". Should be fun.