The Adventures of Teddy Ruxpin, in audiocassette form, was my favorite tape as a child. I especially adored the song "Mudblups" which was all about the evil mudblups that infiltrated the house and got everything dirty! I remember dancing around the living room to this (Mommy, tell me that we still have this tape somewhere...I want to listen to it.)
My favorite character was Tweeg, who sang an amazing song about how he wanted to be rich. (My two favorite songs were the "Mudblups" one and the "I Wanna Be Rich" one.)
Here's part of the "Rich" song.
Huzzah for Tweeg! Tweeg owns. I'm totally Tweeg in disguise. And the supreme oppressor.