Understanding Car Crashes: It's Basic Physics was produced by the Insurance Institute for Highway Safety (IIHS) in 2000. They've done what they could to make sure no physics classroom is without the VHS or DVD. In 2010, they uploaded the 22-minute, Griff Jones-hosted video to YouTube.
I always liked it, but didn't know where to use it. This year I was able to carve out a few days between the last unit test of the first semester and final exams. My first semester is all mechanics, all the time. So it seemed like a good match.
Here's my student worksheet: YouTube Physics: Danger and Safety in Car Crashes
And here's the video, itself.
Understanding Car Crashes: It's Basic Physics
My lesson continues after the video is over by inviting students to research vehicle safety ratings for two cars they might ride in at IIHS's website (http://www.iihs.org/iihs/ratings).
By the way, if you haven't seen my YouTube Physics page, check it out. You'll find even more engaging video lessons.