If you thought the Muvi Micro DV was tiny, check out the new Muvi Atom video camera. At 1.57 x 0.78 x 0.59 inches and 1.4 ounces, this $122 nano camera is destined to record a billion amateur gonzo videos.
The black aluminum-encased Muvi Atom saves 640 x 480 AVI movies with audio in a Micro SD card (supports up to 8GB, includes a 2GB card by default). You can even set it to start recording when it hears a voice. It charges via USB and can act as a webcam with your PC or Mac. [Firebox vua Nexus]
Update: It's not the smallest.