Mary Lynn Rajskub (/ˈraɪskəb/; born June 22, 1971) is an American actress and comedian, best known for portraying Chloe O'Brian in the Fox action thriller series 24. She appeared on HBO's Mr. Show, and in the films Dude, Where's My Car?, Sweet Home Alabama, Punch-Drunk Love, Safety Not Guaranteed, The Kings of Summer and Night School, among others.
Rajskub was born on June 22, 1971 in Detroit, Michigan, and raised in nearby Trenton, the daughter of Betty and Tony Rajskub. She is of Polish, and Czech descent. Her father is a pipefitter and her mother worked as a pharmacist's assistant. Rajskub played the clarinet in a school band and portrayed Frenchie in the musical Grease. One of her childhood inspirations was the television series Moonlighting. She later moved to Los Angeles, California, where she worked as a waitress in a Hard Rock Cafe and a ticket-taker at the Beverly Center movie theater.