I was surprised to find out that there were a lot of different versions of the MTM Logo, since MTM and WKRP have the same version. Here is a site that lists the variations:
http://www.geocities.com/RMH2159/mtm.htm

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From the great Carol Burnett Show:
"As the Stomache Turns"
Marianne: Well, look! It's Pocahantas Purneli, the town halfbreed! Half indian, and half dressed! Come in Poke!

Pocahantas: Maryanne, I know there's something desperatly missing in your life!

Maryanne: How did you know?

Pochantas: I saw it in your eyes, I read it in your face, I read it on your bumpersticker that says "Welcome, Shriners"!

The Silver Spoons/ALF/TC Spinoffs Pettion (http://www.petitiononline.com/SSTRTAC/petition.html)