I like some of the early work of Woody Allen, including Sleeper, Bananas, Take the Money and Run, and others.
One comedy-thriller I enjoy is Foul Play with Chevy Chase and Goldie Hawn. Also, the original The Out-of-Towners with Jack Lemmon and Sandy Dennis is great.
There was a spoof on soap operas called The Shameful Secrets of Hastings Corners that was hilarious.
My father’s favorite comedy was the British film, The Wrong Box, but I never cared for that one. I do like Monty Python’s The Meaning of Life as well as Benny Hill sketches.
Finally, it’s hard to beat After Hours in the black comedy genre.