Superman flies into space to stop an asteroid on a collision course with Earth. He crashes into the asteroid but the impact causes him to lose his memory.
00:04 "The Menace from the Stars!"- World's Finest Comics #68
00:15 Adventures of Superman - "Panic in the Sky"(S02E12) / George Reeves
06:11 Superboy - "Superboy... Lost"(S03E11) / Gerard Christopher
12:46 Lois & Clark: The New Adventures of Superman - "All Shook Up"(S01E12) / Dean Cain