I don't know if we have a thread like this already, but if we don't I'm starting this one for any fan who has an episode idea.

SpongeBob SuperStar:

SpongeBob is starting to get bored with his life when suddenly, a limousine breaks down in front of his house, and the celebrity happens to be none other than teen musical star James Fishmore, who looks exactly like SpongeBob but with green eyes. He says that he's sick of his life as a star and wants to be normal for a change, so SpongeBob suggests that they switch lives for a day, since no one will notice becuase they look alike. So for one whole day, James goes jellyfishng with Patrick, doing karate on Goo Lagoon with Sandy, and works at the Krusty Krab while SpongeBob makes movies, has important bussiness luncges with film producers, and meets tons of superstars. At the end of the day, they realize that they really miss their old lives, but they become friends out of it. (Be on the lookout for James in some of my later ideas!)