I'm generally not a big browser of YouTube, but I know there's lots of archival stuff there from my favorite bands lurking about.
Chris Squire playing a Fender Jazz and not his traditional Rickenbacker? Absolutely furious playing by Steve, Chris, and Alan in the studio.
I'm really not a fan of this song (Parallels) as I am the rest of the tracks off of their 1977 return, Going for the One, but I'm starting to come around. Need to set aside some time and see what else rare and unusual Yes stuff is up on YouTube.