Oh, you rinkworks people. You ask a simple question about a simple phrase, and it sends me on a chase around the internet...to all parts of the globe and back again...

Okay, here's a wave of the snickers guy saying "Great Googly-Moogly"
http://www.favewavs.com/tv_wavs.htm

and this is something else I found on my search for how "Great Googly-Moogly" came into being...It doesn't really have anything to do with the subject, but I thought it was funny, so here it is:
On January 1, 1997, the USA Radio Daily, hosted by Gary Nolan, devoted the entire program to the funniest, most outrageous moments of the entire year's broadcasts. Because of overwhelming listener demand, the entire program has been transcribed onto a top-quality audio cassette. Hear Rod's seduction of Rene, the great Googly-Moogly, the nine-inch bolt, the endless story of the big red dog and other classic bits from one of America's favorite radio talk-shows.
You can find this at: http://www.modernman.com/cassette.html

and now I have decided that the great googly-moogly search is a wild goose...there are 115 pages having something to do with GGM, but I'm not going to look through all of them. Hope this helps any that are interested...

Ti'Great Googly Moogly!!!'cia