NASA can show some of the coolest stuff on their channel. You can watch it on the Internet or at home (most satellite services and some cable service have available for viewing). But... sometimes they they have shows aimed at a younger audience and the content is kind silly for adults. I think that most kids who watch would like to see real footage rather than a cartoon of a talking fish (watch it and you'll see what I mean). I know they have enough footage from decades of space operations to show. I like to watch the live feeds from the station, especially when the shuttle is up. Anyway, if you don't already do so you watch and enjoy.
HERE IS A LINK TO NASA-TV:
