The "Jimmy Timmy Power Hour" is the first Fairly Odd Parents/Jimmy Neutron: Boy Genius crossover special, and the sixth episode of Season 4. It was followed by Jimmy Timmy Power Hour 2:When Nerds Collide and Jimmy Timmy Power Hour 3:The Jerkinators in Season 5. It was written by Gene Grillo and Butch Hartman who co-directed with Keith Alcorn.
A chaotic duel with characters from The Fairly OddParents and Jimmy Neutron. Timmy wishes to go to the greatest lab in the universe for the science project, and ends up in Retroville inside Jimmy Neutron's lab. Meanwhile, Mr. Crocker is trying to take over Fairy World.