What is the best comedy I probably never heard of?

Top Secret! with Val Kilmer. One of my favorites.

• The Gods Must Be Crazy (1980, South Africa) - An African Bushman is living happily without any needs or wants, nor knowledge of the outside world -- until a glass coke bottle is thrown out of the window of a passing airplane. The bottle causes tremendous disruption in his tribe, so he vows to return the bottle to the gods who dropped it.
• Tampopo (1985, Japan) - By what I consider one of the masters of Japanese cinema, Juzo Itami. A traveling truck driver and his companion vow to turn around a struggling noodle shop. Main story is interspersed with several short stories related to food.
• Tapeheads (1988, US) - Michael Nesmith directed film starring John Cusack and Tim Robbins, about two slackers who, upon meeting their musical idols the "Swanky Modes" vow to revive their career by any means possible.

It seems that The Slammin' Salmon kind of slipped through the cracks for most people. It's pretty good.

Bananas with Woody Allen ; walked in on my dad watching it on PBS, thinking what crap is he watching now. Ended up watching the entire thing with him laughing my ass off. Own it on DVD now. PS watch out for the quick cameo by a very young Sylvester Stallone...