More than 40 years before True Blood and Twilight made angst-ridden vampires the hot new thing, there was a wicked little afternoon soap called Dark Shadows. At its center was Barnabas Collins, a brooding bloodsucker played with equal parts torment and relish by Jonathan Frid, and if you were an offbeat kid in the late 1960s there's a good chance you raced home from school to watch it. Tim Burton, the acclaimed director, was one of those eager young fans. And now he's put his own spin on things. His movie version of Dark Shadows opens May 11 with a starry cast headed by Johnny Depp — yet another boyhood buff of the soap — as the reluctant, guilt-ridden and immortally sexy Barnabas.