DroidForums users has put together an in depth guide for building Cyanogen Mod and other AOSP roms using OSX. This can be accomplished with either a Mac or a Hackintosh. Use this to obtain Rom community cred and fame. If you don't actually wish to build a rom this can still be useful for learning exactly what a Rom is and the processes it takes to build them. This will give you a better idea of what you are actually running on your device, and is an interesting and insightful read to say the least.
How To Build Cyanogen Mod
