My dad sent me this comedic gymnastics video routine by Paulette Huntinova (Paul Hunt). Truly Olympic gold if I've ever seen any. You can click here to see other routines of his on the YouTube beast. It's really worth your time and your funny bone with thank you. Her (or his) balance beam routine is really funny.
If this isn't enough to satisfy you, just search "gymnastics bloopers" on YouTube to find all kinds of tumbling mishaps.
Keystroke of appreciation to FJ Sr. for sending Paulette Huntinova to us in the first place. It makes our day-before-school day.