It is doubtful if there are not more famous names in all of fantasy tales than Arthur and Merlin. For both immediately conjure up images of castles, maidens, swords, dragons and magic. It is the stuff legends are made of. NBC’s attempt to launch a television series based on the life and adventures Merlin may not have the filthy lucre behind it like” Harry Potter” films, but it is an honest attempt to portray a classic tale of two young men destined for greatness.