Going back a few years...
The Sunshine Boys, with Walter Mathau and George Burns. A Neil Simon comedy about two retired vaudeville actors enticed to come out of retirement for a TV special, recreating their famous double-act.
Problem is...they hate each other, and have not spoken for about 40 years!
Mathau is excellent as the mean-spirited, crotchety old git, and Burns is a perfect foil for him. Their scenes together are a masterclass in subtle comedy acting...and the final scene with the TV special is hilarious.
Glad someone also mentioned It's a Mad, Mad, Mad, Mad World...that's been a favorite of mind since I was a kid. It's a who's who of Hollywood comedy greats, and is a kind of 'everything but the kitchen sink' kind of comedy...some incredible set-pieces, stunts and acts of wanton descruction for a film of it's era.
Fans of that movie may also appreciate
Those Magnificent Men In Their Flying Machines.
The Great Race
Monte Carlo Or Bust
The Cannonball Run movies and to a lesser degree Rat Race tried (unsuccessfully IMO) to duplicate these star studded, anything-goes comedy epics.
