Not the Marky Mark's talking bear movie :). I know that most teachers have seen the videos here on TED I love to play them and just listen while I work on the computer.
It's a little long, Sir Kenneth Robinson's on creativity is one of my favorites-because it's funny and thoughtful at the same time:
And this one on what adults can learn from children:
An incredible tutoring project:
An African teen who built a windmill from spare parts:
But I also use them sometimes with my kids. Einstein the Parrot is one of their favorites-I can't imagine how long it took to train her to do that:
A great talk on following your interests and how amazing discoveries are still being made in the ocean, who knew an octopus has a sense of humor:
Who knew there were bats with long tongues-amazing ways technology has changed film making: