UNetbootin, Universal Netboot Installer
Found this utility on SourceForge This small utility will take any .iso image that is bootable and write it out to a USB flash drive. I used this recently to move the VMWare ESXi 5 image to a USB stick to install on an HP Proliant server. It worked beautifully. If you are looking to take any .iso and have a bootable USB flash drive, this is the one. Very easy to use.