The CW has “Smallville,’’ about Superman as a teenage hunk, and now NBC has what amounts to “Camelotville.’’ “Merlin,’’ a summer series imported from the BBC, chronicles the early days of Arthurian legend, when the fledgling magician was still honing his craft. Essentially, the show is a portrait of the wizard as a young man, with the impossibly handsome Prince Arthur as his best frenemy and Guinevere - “most people call me Gwen’’ - as his possible love interest.
This kind of invented back story can be fun, as J.J. Abrams demonstrated with his “Star Trek’’ movie. It allows the writers to move freely outside the bounds of the myth - and yet explain the myth and add layers to it. Sadly, the writers of “Merlin,’’ which premieres with two episodes tomorrow at 8 p.m. on Channel 7, fail to develop any very original Arthurian origins. The middling show plays too much like “The O.C.’’ with swords, crowns, and a cheesy CGI dragon (voiced by John Hurt).