Does anyone know the name of this pop artist?

I've been searching for this pop artist who is know for his stick figure people & use of high intensity color, especially pink and yellow. I remember his art on sesame street as a kid it was a clip of people & dogs & there was his signature little squiggle lines used as well. His art was mass produced & printed on may T-shirts

I'm pretty sure this was one of his works. It is the image on the shirt of the guy wearing suspenders.

http://www.youtube.com/watch?v=aThxBOmGxOk

Please name this artist! You'd make my day!