I don't think I had this toy, but I sure wanted it. Big Trak was one of the first toys I can remember that you actually programmed. It still looks pretty neat in the commercial, but I know I would have gotten mad at the toy because I would have been trying to make it do things outside its programming parameters (bully stun ray, flying car, etc.). You can read a bit more about this (and other cool toys like the Micronauts) here
This commercial isn't interesting because it showcases the then-new Chicken McNuggets, a neat-o contest or the old-school dipping sauce containers. No, if you pay close attention, when they show you the McDonald's food you could win, they pan across a whole bunch of stuff, and there on the left, is my beloved fried apple pie in its keen cardboard container.
I didn't watch as much Sesame Street as some of my peers, but there are a handful of things from the show that I love dearly -- this song being one of them. This runs through my head on a daily basis. No, I'm not kidding. After you watch it, you'll find yourself humming it for at least a fortnight.