You'll find endless videos and stuff on the web these days. Unfortunately I find most of it boring and it most probably is. But hey, after all it''s the web and there are people who have to tell something that is worth spending an hour. Feel free to add your favorites to the list (via the comment function).
Ted talks are usualy perfect for listening to (instead of watching) - e.g. in your car. Note that there is a link to directly load the talk into ITunes.
Stephen Petranek: 10 ways the world could end
Burt Rutan: Entrepreneurs are the future of space flight
Kevin Kelly: How does technology evolve? Like we did
Our cell phones, ourselves: Jan Chipchase on TED.com
Seth Godin: Sliced bread and other marketing delights
Craig Venter: On the verge of creating synthetic life - "Are you trying to play god ?" - "No, we're not playing"
It looks like Google does no longer allow easy downloading anymore.
Turning Email Upside Down: RSS/Email and IM2000
Toward the First Revolution in the Mind Sciences
Zero Configuration networking with Bonjour
Flex, Flash and Apollo for Rich Internet Applications
Supersymmetry, Extra Dimensions and the Origin of Mass