Jim Carrey
The '1994' triplet:
Ace Ventura: Pet Detective (1994),
Dumb and Dumber (1994),
The Mask (1994)
Here is a list of other actors' "3-set of major performances from the same year"; which one do you think had the most impressive year?
After voting, you may discuss the list here
Best Picture Nominee BEST PICTURE WINNER (Oscar nomination) (Oscar win)