@ Fragula The Furry
Don't worry, it's not the first time we've done this, humans are pretty good at hitting the Moon now.
The Soviet Union started it (so blame them) with Luna 2 in 1959 and continued smashing stuff (sometimes deliberately) into the Moon for about the next ten years.
The US then deliberately crashed the Ranger probes into the Moon - filming all the way - look for the videos on YouTube - they're awesome:
http://www.youtube.com/watch?v=TP3e8ujJfJ8&feature=related
(You can do the Space 1999 theme tune if you like)
During the Apollo missions, the discarded upper stages of the Lunar Modules for Apollo 10, 11, 12, 14, 15, 16 and 17 were all crashed into the Moon to study the internal structure of the Moon. they would have crashed anyway because it's pretty much impossible to maintain an orbit around the Moon because of its lumpy gravity. Crashing them at a known time allowed the geologists to work out just how much energy was involved.
And just to top that, the SIVB third stage of the Saturn V was crashed into the Moon for Apollos 13 - 17 officially in an attempt to locate the boundary of the Moon's core, but I suspect mainly because it was going to make a really big bang.
@ Ginger.
It's 50cm with good lighting. It's been tasked to return images of all the landing sites - not just Apollo, but also Surveyor and the Soviet Luna/Lunokhod sites.