Woody Allen in The Insider
Phillip Seymour Hoffman in Gladiator
A (young) Brigitte Bardot and John Candy (in drag) as Thelma and Louise.
Adam Sandler in Citizen Kane
Gwyneth Paltrow in "Mommie Dearest"
Lord of the Rings with
Joe Pesci as Gimli
Jeremy Irons as Aragorn
Bette Midler as Legolas
oh, you get the idea...