http://science.nasa.gov/Realtime/JTrack/3D/JTrack3D.html
Click on J-Track 3D for tracking over 900 satellites.
Thanks. Usually stuff like this from NASA is unnecessarily complex and confusing, at least for regular folks. They have way too many things jammed onto their pages and the structure is terrible. I very rarely rely on their websites for anything. But then, I find this to be the case for most government websites.