Fedora on Mactel
Fedora 17 adds support for booting and installing via EFI on Mac hardware. Support is currently limited to machines with 64-bit firmware, which is most hardware produced after mid-2007. You can verify your system's firmware under OS X by running:
ioreg -l -p IODeviceTree | grep firmware-abi
If this returns "Firmware-abi" = < "EFI64"> then your system is supported.
To install Fedora, download a CD image and either write it to CD or a USB stick. Reboot the machine and hold down the left alt/option key. A list of available boot devices will appear. Click the icon with the Fedora logo.
Here is a detailed guide of the installation process  by Aneesh Dogra
Some machines with AMD Radeon graphics hardware will currently fail to boot.