Deleted Scene: According to this article, there was supposed to be a "Garage Door Escape" commercial done by Mega64, but it was pulled by the network before it could air, due to the implications of survival in the commercial.
Squick: Averted in the making-of Slushi commercial (from the "Uberchaun!" episode), according to the Mega64 podcast: the actual slushie used had candy in it to recreate the colors of sushi (watermelon for wasabi, black licorice for seaweed, etc.) with sherberet and ice cream to hold the candy in place. They expected the kids to take a sip, figuring the concoction would be gross, but the kids thought it tasted good, and proceeded to chug it, even after the director yelled "Cut!" The guys said they felt guilty having to pry away the cups because they really didn't want to make more.