Michael J. Fox performed at his annual Parkinson's benefit on Saturday night. He played guitar on Chuck Berry's "Johnny B. Goode"...which is the same song he played at the school dance in "Back to the Future".

Someone posted video of it on YouTube, and he was great. He even did the one-legged hop across the stage. He does the hop at 3:03.

Here's the original scene from the movie:

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