Here's McCartney's reaction to Harrison's death. Seems kind of rehearsed, but I guess it's expected when dealing with the media, especially since the lashing McCartney received from his seemingly passive reaction to the Death of bandmate John Lennon.
A Live performance of George Harrison's "Beware of Darkness" from a 1971 benefit performance for UNICEF called "Concert for Bangladesh". It was the first fundraising concert of this kind. The other singer is Leon Russell. The concert also included Eric, Ringo, Billy Preston, Klaus Voorman, Jesse Ed Davis and others
John Lennon life starts at 40 rare private tapes (some in Japanese) includes footage of Watching the Wheels, I'm Losing You, Life Starts at 40 (unreleased) and Imagine.