Edison was a pretty cool guy, but he was also a bit of an obsessive genius. There is a little bed in his library that he would often use on overnight thinking sessions. He was constantly coming up with new things that could make life easier or, more often, would come totally out of left field and invent something we didn't know we wanted. When he was just a kid in Michigan, he started selling candy and vegetables, and soon became a relative expert at the telegraph. He'd amassed quite a fortune for himself by the time he moved to New Jersey, and he used his wealth to fuel inventing, and used the revenues from his inventions to fund more inventions.
Despite his total genius, he was a weird dude. Since childhood he had a severe hearing impairment, so he often felt awkward in social situations, unable to engage in much conversation. While he was working on prototypes of the gramophone, his horrid taste in music became clear; he often enjoyed shrill vocals and dissonant music because he could actually hear it. He was also stubborn - he worked in his labs until a few months before his death at age 84, and his employees had a personal elevator installed for him so he wouldn't have to climb the stairs. He refused to use it, however (despite a sign on it reading, "For Mr. Edison Only"), and climbed the stairs instead.
I'll babble a few more facts as we go through pictures. Patrick and I went to Edison's Labs on June 20, 2010.

The thumbs-up!

The area around the big brick buildings (which include the machine shop, library, chemistry lab, blacksmith, etc - everything needed to create any invention known to man, basically) is very cool, and feels like you're stepping back in time to when it was a bustling factory.
36 more images below! Click any one to see it bigger in Photobucket.