I was recently lucky enough to see Guy Kawasaki present to Microsoft on the Art of Evangelism... it was a very entertaining session.
While enough said Guy is a legand and you can see him virtually talking about why it’s essential to innovate—and how to do it.
Register Now (yeah too many steps I know) - session is March 19 11:00 AM Pacific Time or (6am Tuesday morning NZ time)... the web cast will be available on-demand 72 hours after the event so you don't have to be an early bird.
One comment Guy said during his presentation that resonated with me was that since he has left Apple Apple have never asked him back to speak... their loss I guess.
Vcal here to get into your calendar.