I saw this movie recently. 2 hours later, my head still hurt from laughing. The plot was soo awful, the jokes were soo bad, but what I didn't count on were:
1. the 2 scenes before and after the movie that had Pat and Jay posing (that caused more than enough laughter)
2. The kick through the windshield that decapitated the evil-doer.
This movie is about 20 times better than the Rush Hour series, and my copy even came with a disclamer saying if you didn't like the movie, send certificate to HBO. While I considered it, the date you had to send it in was January 1991 (which also caused wackiness to ensue).