Saw that footage like two years ago. Great footage.

I've seen the footage before too. It's definitely worth watching if you're a fan of Roger & Zapp. Here's part one:

There's a video of the song which Roger, Shirley Murdock & Ray Davis recorded, it's called 'I'm So Happy'. Pat Riley introduces the video (I think he would have been the Lakers coach at the time) & the song was written for Kareem Abdul-Jabbar. In the comments it says KAJ was/is a big fan of Roger's.