What was the name of the Professor's character in Gilligan's Island?  It's been bugging us for ages!!

Thanks,
Frustrated Peter.

That would be Professor Roy Hinkley as played by Russell Johnson.

Other characters also had full names:
    Jonas Grumby (The Skipper)  - Alan Hale Jr.
    William (Willie) Gilligan - Bob Denver
    Mary Ann Summers - Dawn Wells
    Thurston Howell III - Jim Backus
    Mrs. Lovey Howell  - Natalie Schafer
    Ginger Grant - Tina Louise