The only one I can think of is the one where all the kids are walking through a jungle with safari hats and binoculars. They look around and see some animals, but then catch a glimpse of..oooh, what is it!.. this big letter that goes swinging through the trees with someone dubbing in a Tarzan call. Then the kids just stand there looking.."duuhhh". When the letter stops in front of them, they say "G!" and then they say "G!" and then they say "G" again! Aaaaargh!