Bill Simmons recently compiled a list of the MVPs of comedy from 1975 to the present. Here's a portion of the list:
1989: Dana Carvey
1990: Billy Crystal
1991: Jerry Seinfeld
1992: Jerry Seinfeld, Mike Myers (tie)
1993: Mike Myers
1994: Jim Carrey
1995: Chris Farley
1996: Chris Rock
Unlikely Words has the full list and you can go to Simmons' site to read the list with annotations. Such as:
1982-84: Eddie Murphy
The best three-year run anyone has had. Like Bird's three straight MVPs. And by the way, "Beverly Hills Cop" is still the No. 1 comedy of all time if you use adjusted gross numbers.