By Jason Kottke, kottke.org – August 23, 2010 at 10:00AM
Watching this sewing machine animation, I feel like Homer Simpson when he first saw the drinking bird. It’s sewing the thread!
I could watch that all day. Many similar animations are available here, including the Wankel engine, a reciprocating steam engine, and the fascinating Maltese cross mechanism. (via jorn)