I try to bring elements of my own personality to every character I've played, but I think I'm pretty similar to the character I'm playing now. The biggest departure would have to have been Freaks' and Geeks Sara, who was this sort of subordinate and shy girl.
The sustainability revolution will, hopefully, be the third major social and economic turning point in human history, following the Neolithic Revolution - moving from hunter-gathering to farming - and the Industrial Revolution