Jon Lovitz Appears as Tommy Flanagan the Pathological Liar on The Tonight Show Starring Johnny Carson in 1985. MORE JOHNNY CARSON YOUTUBE: .\r \r Pathological Liars Anonymous Sketch Re-enactment.\r \r Comic Relief John Lovitz Stand Up Comedy.\r \r Jon Lovitz and Dana Carvey reunite with some awesome SNL skits.\r \r mytalkshowheroes 1992.\r \r