At the Safeway in the Oakland Hills, co-workers call checker Roberto McCoy "the Experience."
Customers always remember him. He's worked here eight years, and he's usually smiling, bopping his head and mouthing rhymes.
McCoy calls himself Visualeyes — Viz for short — when he's making music. He records in his bedroom, burning CDs with his computer.
He believes in sharing his music, so he made 100 CDs and gave them away to shoppers at the store.
He was down to his last one when David Robinson, a video game developer, came through his checkout line.
"Merry Christmas," McCoy said, dropping his gift into Robinson's bag late in 2013. "I'm...