Jack Carson Trivia
| Jack Nicholson ad-libbed the line "Here's Johnny!" in imitation of announcer Ed McMahon's famous introduction of Johnny Carson on U.S. network NBC-TV's long-running late night television program "The Tonight Show Starring Johnny Carson" | True |
| In "The Shining", Jack Nicholson ad-libbed his famous "Here's Johnny!" in imitation of Ed McMahon introducing Johnny Carson. | True |
