I certainly never see them on cable when I visit friends and family. I saw Kim Possible once a long time ago, and I also was really impressed with Teen Titans, enough to get the box set.
Are these on a channel they don't get? On AMZN or Netflix? Or do you just have to get them through BitTorrent?
There might be some good stuff, but it's never on. Spongebob Squarepants is always on... I wonder if there's a connection.