In the 1987 movie "Back to the Beach" the actor who portrayed the bartender also played a well-known character from a long-running sitcom. In his cameo appearance he said:
"You know, I lived with a guy for years. A real genius. He could take a couple of these pineapples or a couple of coconuts with some string and wire and make a nuclear reactor. But he couldn't fix a two-foot hole in a boat!"
Who was the character, and for a bonus, what was the name of the boat that he was referring to?