Mary Lynn Rajskub (; born June 22, 1971) is an American actress and comedian who is best known for portraying Chloe O'Brian in the action thriller series 24 and Gail the Snail in It's Always Sunny in Philadelphia. Rajskub was a regular cast member on HBO's Mr. Show with Bob and David, appeared in The Larry Sanders Show, Brooklyn Nine Nine, and Veronica's Closet, and such films as Dude, Where's My Car?, Firewall, Sweet Home Alabama, Punch-Drunk Love, Mysterious Skin, Little Miss Sunshine, Sunshine Cleaning, Safety Not Guaranteed, and The Kings of Summer, among others. Wikipedia
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