Shaun of the Dead (2004)

starring Bill Nighy, Simon Pegg (add more)

Please note: For any non-UK readers (and probably quite a few UK readers too), if you liked this film, check out a fantastic TV series called "Spaced", which was written by, directed by, and starred quite a few of the same people, made a few years ago. Pure, unadulterated genius. I think the DVD's only available on Region 2, but seek it out. NOW.