NASA's Image of the Day posted a fantastic shot: the International Space Station crossing the face of the Moon:
Wow! You can just make out the shape of the ISS. And don't let the relative sizes fool you: the Moon is about a thousand times farther away than the space station. It's a wee bit bigger.
And don't forget that right now Discovery is docked to ISS. Check for them in your night sky!
Image credit: Fernando Echeverria, NASA