[Ultima (OP)]

If you go to http://www.ted.com/ you can get free access to quite a lot of fairly inspiring (though not that detailed) lectures from big name thinkers! The topics covered are all quite different but there is lots of science and technology. I've spent quite a few hours on there when I should have been working already []

Have fun!

[DoctorBeaver]

I've not come across that site before. Thank you,