Russell Johnson, best known for playing the Professor on "Gilligan's Island," has died at the age of 89, ABC News and TMZ.com reported.
"Gilligan's Island" aired for three seasons and 98 episodes on CBS from September 1964 to September 1967.
The show followed seven castaways as they attempt to escaped from the island where they've been shipwrecked.
"The Professor" was in fact a high school science teacher, not a university professor.