This was one of my favorite episodes. The ones with Mxyzptlk were always cool, because he could basically do anything. I’ve got to locate the one where he uses a type-writer to place the SuperFriends into different situations.
Batman and Robin take the Wonder Twins to a 3-D movie. Mr. Mxyzptlk, however, decides to pester the SuperFriends by pulling them into the movie. Using his magic movie camera he can make the SuperFriends do or say anything he wants.