John Stamos Makes a Surprise Cameo Appearance at a Beach Boys Concert—Watch ... - E! Online

John Stamos may play a grandpa on television, but he can still bang a drum as good as Uncle Jesse.

The 52-year-old Grandfathered star took the stage Saturday night alongside the Beach Boys for some good 'ol nostalgic fun at the L.A. County Fair in Pomona, California.

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