I like this one, which is about conducting, but was pitched at an audience of corporate leaders, (note the reference to "cubicle" at the beginning) not musicians. But one which is worth any musician's time:
http://www.ted.com/talks/itay_talgam_lead_like_the_great_conductors.html
Then, because I don't know why, I liked this next one. Before "War Horse" was a Spielberg movie, it was theatrical production for the National Theater in London. These two guys (lovers, they mention it, don't watch it if this bothers you) developed the puppetry for that production. For some reason, the skill in this, the art-for-art's sake (i.e., they didn't HAVE to do this stuff, they were somehow gifted and driven to do it)-- WHATEVER it was, I totally fell to pieces at the appearance of the full size horse puppet near the end of this video. I admit to tears of --what? joy? delight? triumph? at the visual evidence that imagination, art, and intense collaboration could result in such an unusual and arresting folly. Fleeting, magical, not real and yet most real. Totally artificial, and yet in its own way authentic and believable. Captivating.
http://www.ted.com/talks/handpring_puppet_co_the_genius_puppetry_behind_war_horse.html
Chuck in St. Louis