Astronaut Chris Hadfield has been commanding the International Space Station for the last 5 months. During that time he's been posting photos, observations, and videos about his experience. (His interview with William Shatner was priceless).
He is a pretty darn good musician as well. I love this joint-rendition from space and earth (with some help from The Barenaked Ladies):
Col. Hadfield returns to earth today. A few days ago, he posted a revised version of David Bowie's A Space Oddity... Quite poignant actually:
Thanks so much for all the views from space, Col. Hadfield! You helped to make the earth feel like one unified place...