Thoughts on Creativity (not mine); should keep you busy for a while...

Twyla Tharp (her book, The Creative Habit, is worth reading if you like making stuff...dances or whatever):
http://www.youtube.com/watch?v=zLzl6D8kYuY

Amy Tan (I've never read her books...she's funny and smart though):
http://www.youtube.com/watch?v=8D0pwe4vaQo

Bill T. Jones (won the genius award, because, well...he kicks ass, skip to 5:47)
http://www.youtube.com/watch?v=Y-LVmfTbJYs
http://www.youtube.com/watch?v=zYKYOsuOFR8
http://www.youtube.com/watch?v=C2YVsUFi31Y

And the best Bill T. vid: http://www.youtube.com/watch?v=NOSsDHLooi0

Dance specific, William Forsythe improvisation technology:
http://www.youtube.com/watch?v=wsRnVW96KN8
http://www.youtube.com/watch?v=9-32m8LE5Xg
(this goes on and on, very complex, see it in action in the next vid):
http://www.youtube.com/watch?v=wym1-b48NbY

On collaboration:
http://www.youtube.com/watch?v=THuyhgEhkdU

Another fun one:
http://www.youtube.com/watch?v=RjwUn-aA0VY