Rube Goldberg is the cartoonist famous for inventing wildly complicated gadgets designed to perform a simple task. As Rube Goldberg machines go, the one featured in this video isn't all that spectacular. But as far as cats and babies watching a Rube Goldberg machine videos go, it's near-perfect, with an ending that would make Rube himself proud. It's almost as if the gadget was designed to end with the cat and the baby turning around in perfect synchronization to produce a giggle from the woman with the camera.

The most ingenious part of the machine is that it never needs to be rebuilt. All mom has to do is hit replay, and the Rube Goldberg Cat And Baby Sitter does the rest.

Flag up + cat and baby turn = mom giggling. Tada!

(by Jonathan Corbett)