Dunno who has seen the actual Show. I haven't. But here's the great Opening Sequence, where Neil Patrick Harris jumps from Show to Show ... and "is" Richie for a Moment, and Mrs.C is there as well :) :D

YouTubeClip (http://www.youtube.com/watch?v=DdVGjSE80lU)

I saw the show! It was cool. I thought. I was like Yay! Happy Days is in there. :D