This is a 256Kbit I2C flash EEPROM from Microchip, being sold by Sparkfun. It would be neat to buy a bunch of these, or possibly larger chips. Then load them with interesting data and videos, and leave them around at a place like DEFCON as easter eggs. To get the treasure, the finder of the chip would have to wire it up to a microcontroller and clock the data out. Add a FAT and SD card controller like this fellow, and you can easily load the data into a laptop or desktop.
Disclaimer: I don't work for sparkfun, I just think they sell awesome stuff.