Other than Dexter, my other favorite show from the past season is Heroes.
It's about a group of people, who have nothing in common, realising that they can do things other people can't. Like stoping time, flying. Your normal superhero kind of thing. But these are normal people trying to come to terms with there new powers.
It starts on BBC2 on 25th July at 9pm. Watch it, and enjoy.
More info over at bbc.co.uk