This is great! I especially like the sax solo at 1:15. His expressions crack me up. :D
https://www.youtube.com/watch?v=0exXGfzivJ8
This guy has done a bunch of these lip-sync videos.
http://www.youtube.com/user/jimmyslo (http://www.youtube.com/user/jimmyslo)
Here's another one:
https://www.youtube.com/watch?v=P1hnVutWxos