ISOStick - The Optical Drive in a USB Stick
The ISOStick is essentially a much smaller version of the Zalman ZM-VE200 & VE300. Both enable you to boot from ISOs, but instead of using a hard drive, the ISOStick uses microSDHC/SDXC cards.
If you want one however, you had better be quick before they sell out. There aren't many left. :)
Website (Buy) / Blog / Wiki / Twitter / Forums
The isostick shows up as two drives: an optical drive and a flash drive.
It lets you "load" ISOs from the flash drive into the optical drive—sort of like mounting a disc image in *nix, or using DAEMON Tools in Windows—except computers think it's a real, physical optical drive, with no software required.
Because it's all in hardware, you're able to boot from isostick directly.
If you can boot from a USB CD-ROM, then you can boot from isostick.