Here's a video that proves 1 is actually equal to 2!
How did you do with figuring out the error? I think I know what it is, but I'm going to check with my husband to be sure. Update--I only had it partly right. He knew immediately. If you don't get it, show it to your kids who have taken algebra and see how they do.
The original website is here (via Rovaal's twitter feed). OK--I enjoyed the video. Rovaal seems to be having a hard time getting enough viewers for his marketing contest. So watch the video and post it yourself if you like math problems!