Here are three I love:
1. Allman Brothers doing Melissa on the Dennis Miller show. Guitar work insane. Perfection.
https://video.search.yahoo.com/searc...91&action=view
2. Prince playing on My Guitar Gently Weeps at George Harrison tribute (pretty well known clip)
https://video.search.yahoo.com/yhs/s...e&action=click
3. Lorde doing Life On Mars for Bowie tribute at UK award show. Amazing.
https://video.search.yahoo.com/yhs/s...a2&action=view
All pretty easy to find.