If the US Space Shuttle or Int’l Space Station are anywheres near you shortly before sunrise or shortly after sunset, the reflected sunlight is very easy to see. You can’t see any detail, just a swift point of light, but it’s several hundred miles away, and I think that posters to this thread might think the idea of seing it to be rather cool.
NASA has a site http://shuttle-mir.nasa.gov/realdata/sightings/index.html which will show you exactly when and where to look. For example, tomorrow, Tues Aug 13, it will become visible in Mexico City at 7:54 pm, in the NNE part of the sky, 35 degrees above the horizon. It will travel south, reach a maximum elevation of 39 degrees above the horizon, and then descend, disappearing at 7:57 pm, in the ESE part of the sky, at 12 degrees above the horizon.
If its not cloudy!