@panzade,
Yes - that was Robbie - it was during the Last Waltz. I love that video because they're having so much fun trying to outdo each other and I think even Eric shows on his face that he's surprised that Robbie's keeping up with him.
I love Levon Helm's expression too - I mean the Band kind of broke up because Robbie was such a show-off - but you gotta give it to him - he's a real virtuoso here...and I love that Levon looks at him and smiles shaking his head like, 'He might be a showboater- but yeah- he can play...'