Nick at Nite’s teen soap Hollywood Heights airs every weeknight, telenovela-style. The show, about a pop star and his No. 1 fan, dragged in its first nine episodes — might a songwriting contest unite these two? — but then Friday’s installment gave us the gift we’ve been waiting for: James Franco! Heights makes the late, lamented Instant Star look like a densely plotted masterpiece, but Franco as a Xanadu fan earns the show a pass for at least a few more episodes.