I love this scene from Naqoyqatsi, third in the Koyaanisqatsi trilogy. I've always been a Philip Glass fan. It's especially inspiring to see his music interpreted visually.
I was fortunate enough to see Glass and his ensemble play the Koyaanisqatsi score while the movie played at the Barbican Theatre in London in 1998. I was mesmerized the entire two hours. When the show was over, I practically ran to the underground station because I was so excited and inspired.