Back in 1969 I was allowed to stay up late for the Apollo 11 moon landing and since then have always been fascinated by space travel. With the developments in technology since then, I'm sure it would be fascinating to see what else could be learnt about the moon by further space exploration, with a manned mission, rather than a probe. I was excited after reading 2001: A Space Odyssy by Arthur C Clarke to hope that one day we would have a space station on the moon itself.
I'd also like to see a manned exhibition to Europa as well, but thats probably many years off.