The only thing that would make me more excited about this year's upcoming TV season would be the hope of crossover between the three shows. Unfortunately, I'll only get that with Arrow and The Flash, as Constantine will be airing on NBC. The last time I trusted them with a "capes and tights" sort of show was Heroes, and that didn't end like I hoped. Maybe this time, NBC will do a damn sight better!
This is just the tip of the iceberg, too. I've heard rumblings for months now about The CW network looking at a potential Hourman series, which would just be further fuel for the fire that is the onslaught of DC Comics' TV shows. I'll leave Gotham for Keysha to talk about, because it was strongly implied that stealing that show from her would be a serious hazard for my health.
Which of these three are you most excited about?