Anecdotes

Took a 16-year-old Brooke Shields to her Dwight Englewood senior prom in 1982.

"Patron saint" of the website "Jump the Shark" (a phrase describing an event in a television show that viewers feel has caused it to irreparably stray from its original premise and marks the start of the show's decline) because of his frequent roles as a fresh or a replacement character shortly before the termination of many shows. However, Mariés, deux enfants (1987) was an exception as it ran for five and a half more seasons after he joined the cast.

Was the captain of the USC water polo team.

Before taking the role of Jefferson D'Arcy on Mariés, deux enfants (1987), he played Peggy's husband in a Christmas fantasy episode in which Al wonders what life would have been like if he had never been born. The episodes were It's a Bundyful Life Part 1 (1989) and It's a Bundyful Life Part 2 (1989).

Has two sons with his wife Gigi Rice: Beau Martin McGinley (B. May 25, 1994) and Quinn Thomas McGinley.

Attended the University of Southern California where he was a member of the Sigma Chi fraternity.

Before and after he worked on Happy Days - Les jours heureux (1974), McGinley also worked with Marion Ross's best friend Gavin MacLeod in multiple episodes of La croisière s'amuse (1977).

He's of Irish descent.

No relation to John C. McGinley (of "Surviving the Game", "Scrubs", and "Set It Off" fame), despite a popular misconception.