Sylar was a great villain in the first season, but like every character in the entire show, was totally ruined by the end. The characters basically had no actual personality/consistency and seemed to just be pawns for making shocking things happen after the first season. it was especially bad with sylar because at first he was terrifying and mysterious...by making him a main character we see ALL THE TIME he became much less compelling.
like alec, i also quit midway through season 4. and also agree that adrian pasdar was the best actor. nathan was one of the only characters i really still enjoyed the whole way through. well, adam as well, but he wasn't around nearly as much.
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