Earlier today, Discovery undocked from the International Space Station for the last time. It has backed off from the station, and if conditions are right, you might be able to see them as a pair of bright stars moving across the night sky! Universe Today has the scoop, as well as links to see if the pair will be visible from your area.
If you have clear skies and they happen to be visible, you really should check it out. Watching the two bright dots glide silently across the sky is a surreal experience. It’s very easy to photograph as well; here’s a shot I took from my back yard of the ISS and Atlantis from June 2007:
Discovery lands on Wednesday, and this is her final flight… meaning this is literally your last chance to see it together with the space station.