I've been perusing the internet all day and just happened to run across a link to watch the old Teenage Mutant Ninja Turtles intro. Needless to say, I had to watch it. TMNT was a staple of my childhood, so watching the opening scene to the TV show brought back a flood of memories. 80's cartoons were so much better than the junk they offer nowadays.
As I was watching the intro, I kept on thinking about the theme song singers. I imagine those people never dreamed they would compromise their musical talents to perform cartoon themes. At the very least, they sound enthusiastic. I would have loved to be the one to sing "That's a fact, Jack!"
For further references to awesome theme songs, check out Chip N' Dale's Rescue Rangers, Ducktales, and Talespin.