Today I offer the rare special The Incredible, Indelible, Magical, Physical, Mystery Trip. Aired on ABC on February 7, 1973, IMDB explains the special this way:
"Animated special about two youngsters who are miniaturized and travel through their uncle's body to understand more about his health."
It's not as creepy as it sounds.
The real selling point for this special is that it's the first appearance of the character Timer, who appeared in several short interstitial programs during ABC's Saturday morning programs throughout the 70s into the 90s. If you're a member of Generation X, you know and love Timer!
Enjoy!