Chuck Berry -- who performed at the Pageant on Saturday night, to celebrate the venue's tenth anniversary -- turns 84 years young today. Happy birthday, Chuck! He's not slowing down at all -- in the last few months, he's performed at a DNC benefit downtown, continued to do his monthly gig at Blueberry Hill and even chatted with Rolling Stone about (among other things) working on new music. Here's archival footage of Berry dueting with John Lennon. You know, no big deal.