Doc Brown comes on stage in the hip-hop uniform of all-black clothing, lots of bling and black-out shades, and starts rapping “It’s all about me” in suitably bombastic tones. But Brown isn’t all he seems, as the rap peters out, the gear comes off and he is no longer a rapper, but a stand-up making his debut at this year’s Fringe. It's a terrific and captivating opening to an hour that speeds by.