The ABBA-inspired Mamma
Mia! might be the highest grossing musical movie of all time but even the world's greatest living actress can't make it any less cringe-worthy when she starts belting out "Dancing Queen"
wearing a pair of overalls and a feather boa.
Oscar Stars' Most Embarrassing Roles
These are the films that this year's Oscar nominees and previous winners would probably like you to forget. -- By Meriah Doty