They're just so good aren't they?!
I just finished watching 'Coming To America' and it's a still a treat 16 years after I first saw it. Eddie Murphy is great in it and I believe he wrote it as well.
I think 80's US comedies have a certain innocence that they don't have today. Certainly the BIG studios don't seem to deal in breezy, heartwarming comedy. The independents do, hence films like Little Miss Sunshine and Napoleon Dynamite. Although, Fox were involved with ND, but that was after the majority of the film had been completed. I think it was Fox anyway.
Anyway, some of my other 80's US comedy faves are:
Ferris Bueller
Breakfast Club
Ghostbusters
The Dream Team
Planes, Trains and Automobiles
Any others?