Yeah, I just saw the commercial for it a little bit ago. It said 9pm tomorrow night. Maybe tomorrow is a repeat.
I work for Discovery Channel. Trust me, with Superman Returns being a cashcow in the box office, this will air and repeat about a thousand times.
I liked it. It was basically about if Superman's abilities had any actual scientific plausibility behind them. It'll air again tomorrow (29th) at 4PM on Discovery. It'll also be on the National Geographic Channel as well... Here's a bit of info on the program from Superman Homepage
funny.. every Discovery channel i checked failed to show Superman. I checked my cable guide, i checked Yahoo. nothing.. It shows for tonight's NGC showing, but not Discovery.
I watched this Sunday night on Discovery... pretty good, I think. Some of it was plausible, some of their theories had holes, but it was good just the same.