Network Analyst who plays around with many things open source when he is not feeding his MMORPG addiction.
The Internet needed another source of rants and uninvited uninformed opinions.
The TED conference offers a number of speakers who are inventors, scientists, artists and thinkers. The available talks from past TED conferences and are worth browsing through.
I have not watched them all yet but early favorites include the talks from Michael Shermer and Malcom Gladwell.