I heard that our favorite medicated video game character was originally going to be Puck-Man due to his circular shape. The name was changed to "Pac-Man" to avoid the defacement which would obviously befall the machines if the game had kept its original name.

Looks like this bit of entertainlingly false video game lore belongs alongside Luigi in Super Mario 64, Mortal Kombat's "nude-alities", and other such rumors.