Though we've had this discussion multiple times before, Pico just delivered something that still makes us blink in disbelief. Behold, 8GB worth of flash memory into a tiny USB drive that's the size of a fingertip! Babies can swallow it, birds will confuse them for food, and you can carry high definition movies in your pocket (given you format it in NTFS).
Dimensions are: 31.3mm x 12.4mm x 3.4mm. Available for $49.99.