Kaitlin Olson

A painfully shy Oregon native, Olson found her voice on the stage training with The Groundlings, the storied comedy repertory that helped her to land sundry acting jobs in her first half-decade in Hollywood, including recurring roles on "Carey" and HBO favorite "Curb Your Enthusiasm" (2000- ). But was her work on the off-beat basic cable series "It's Always Sunny in Philadelphia," as the sole female in a misbegotten foursome that put her on …