The venerable BBC documentary series “Arena” is my television happy place. It’s really an unparalleled trove for people interested in a certain era of American and European culture. Last night, as I recovered from Moderna shot #2, I happened upon this documentary about early rock and roller Eddie Cochran. Eddie was one of the early influences on the Fabs, as well as the man behind “Twenty Flight Rock,” reputedly the song that convinced John to let Paul into the band. Well worth a watch, if you’re into such stuff.