I am in love with International Space Station Commander Chris Hadfield. His videos from the space station pretty much justify the existence of the internet. See: Wringing out a washcloth in space and brushing your teeth in space. (He swallows his toothpaste, OH NOOOO!)
Hadfield will be returning from orbit on May 13; the Independent has a nice look at how Hadfield has used social media to share incredibly cool snapshots of life in in space. quote from his kid:
[His] winning combination of profundity and giddy enthusiasm is not new to Hadfield's son Evan. "It's tough not to be biased," he says from Germany, where he lives, "but Dad's one of those people who only come along every once in a while."