Here's a list of things that are 20 years old: The Spice Girls' "Wannabe." The Atlanta Olympics. Nintendo 64. Victor Valle, when he started with us. Also? Atlas Cafe, one of the only purveyors of affordably priced, very tasty cafe fare on the west side of Potrero. They also host a multitude of local concerts — have since they opened — and, fittingly, they'll be celebrating their 20th birthday with a show hosting some of the best talent in the Bay Area. On deck is Young Moon, a Western Vinyl signee who makes layered and quite simply beautiful ballads, and [...]