http://spaceflight.nasa.gov/realdata/sightings/
This is the sight that tells ya when ya can see the space station and shuttle flying overhead. It looks like a bright star. When they're coupled, it's really bright. Just pick your area. Country-State-City...
If ya get a 5 minute window from horizon to horizon, it's kinda cool to watch it. It'll be close to directly overhead. It'll look like a fast moving star (I watch it all the time).
Gotta love this crap. You can watch the trajectory on the NASA channel if you can. This is how I know when to watch. I follow it in the control room.
Tom