I recommend a very large slingshot to get out of the gravity well.

the first moon colony, and maybe even the first moon Olympics. ;)

How high could the moon high jump record end up being?

One last random rhetorical question from my crazy brain, could space travel get it's own version of Moore's Law when it comes to travel time and cost? Once you get something out of the Earth's gravity well, it doesn't take a hell of a lot to get it up to a decent speed.

Remember, space is only a few tens of miles away, unfortunately it's a really expensive trip to travel them.