I haven't watched much of it, but I thought Michael C. Hall was excellent in the title role. Completely improbable storyline, but then a lot of great drama has been built on improbable storylines. In fairness, I really haven't seen enough of the show to rate it fairly (and I'm not sure I'll be watching much more of it; while I will guiltily admit that I read voraciously about gangsters like Dutch Schultz and John Dillinger during my formative years, I find as an adult that the public fascination with serial killers can be as disturbing as any show purporting to explore the topic), but Hall is superb, as he was in "Six Feet Under". Watch it for the great acting if nothing else.