Col. Chris Hadfield is a Canadian astronaut. But more importantly, Col. Hadfield is a Canadian astronaut that likes to do cool things in space and share them with the world. Like, making a cover version of David Bowie's "Space Oddity," while actually in space.
He's back on terra firma now, but while serving as the commander of the ISS he took space pictures of the earth and bundled them up into a really cool ArcGIS project. Col. Hadfield has recently retired (after 35 years of service), but he certainly hasn't stopped trying to make space travel cool.