Chris Hadfield is probably the coolest guy we've ever had in space. Sure, there are people that have done monumental things and accomplished crazy firsts, but none of them had been as open with the huge amount of curious people on Earth!
Chris was very good about answering questions online and doing video demonstrations about what goes on in the International Space Station — something he could find time to do, even though he was the Commander. He taught us about brushing teeth to cleaning up spills, and he even promised to cover Space Oddity on his guitar as requested by his followers on the internet.
HOLY SHIZZ DID HE DELIVER (above)!
He also made sure to plug a dangerous ammonia leak during an impromptu space walk before turning over command and heading back to Earth!
What an amazeballs dude! WE OWE HIM A BEER! Ha!