Mary Lynn Rajskub

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. Provided by Wikipedia