I've seen a few good presentation given on TED. David Grady's talk [1] on meetings is one such example.
This is just my opinion, but unless I can be assured a return on my investment, I am certain I can find better things to spend that kind of money on.
On a lighter note, any time someone mentions TED talks, I am reminded of thought leader This is that. [2]
[1] https://www.ted.com/talks/david_grady_how_to_save_the_world_...