Seems NBC is catching the wave we started here:
The most notable trend in the NBC prime-time lineup for the 2007-8 season, which the network introduced yesterday, is a focus on fantasy and science fiction. Three of five new dramas fit that description, telling tales of time travel (“Journeyman”), a robot-human hybrid (“Bionic Woman”) and a computer geek who unwittingly downloads spy secrets into his brain (“Chuck”).
The NBC interest in time travel may reflect a subconscious wish among executives to return to the glory days when the network was No. 1 in prime-time ratings and sales of commercial time.