In the hit TV series Gilligan's Island, Gilligan actually had a first name: Willy.
Gilligan's first name was used only once, on the never-aired pilot show. Sherwood Schwartz, the series' creator, got the name Gilligan by opening a phone book to a random page. Oh, the Professor and the Skipper's real names? Roy Hinkley and Jonas Grumby, respectively.