There is a TV/DVD series out now called The Universe. It’s a series of shows about all aspects of, naturally enough, The Universe, and everything in it. Recently the aired an episode entitled “Space Travel“, Professor Michio Kaku (who I posted about earlier) discussed the issue of the cost of getting to space and how a Space Elevator could significantly lessen that.
[youtube]http://www.youtube.com/watch?v=lVV0S9cNLKI[/youtube]