Even as a kid, I wasn't overly fond of cartoons. But the wits of Media Education Foundation have mashed-up clips from 27 (yes, I counted) Disney animated films to explain copyright, and the video (which is hosted by Stanford University's Fair Use Project) is a scream. I had to pause it twice because I was chuckling too hard to pay attention, and I didn't want to miss anything.
If you don't understand the concept and legalities of copyright, this is a must-watch video. If you have a fairly good grasp of copyright law, it's an absolutely must-watch video that will encourage you to examine your position on the doctrine of fair use and the duration of copyright.
I snatched the link from Wired, which says, "Disney lawyers' heads must be spinning over this one." Yeah, I'll bet.
Have fun, kids. And be patient while the video loads. The thing is ten minutes long.