For gaming, i think you better DON'T get a mac la, eventhough you can install windows in a mac machine.

Why?

Mainly cos you require to waste big $$ buying a mobility/laptop based machine, such as iMac or macbook pro, macbook is a no-no for gaming. You should know that mobility is pricey, yet low-performance especially for graphic card. In order to play smoothly(Btw, i speaking in hardcore gamer, not some light gamer), you need Mac Pro which is a workstation (yet it's Overpower cos of the 2 server processors). Just for your extra info, there ain't any desktop machine for mac, except Mac Pro.

If you are really a hardcore gamer, just forget about mac machine. That's my opinion. But if you got a generic desktop machine(for gaming), and you want try out mac osx, then you properly can get a mac machine.

@wildarms, the main point is depending which type of games you want to play. If you love to play FPS(First person shooter) then any laptop or mobility is not your choice for gaming. Better get a desktop machine, which is much cheaper and powerful.

Only newer mac machine(Intel mac) can install windows via bootcamp. Others like parallels, vmware or crossover are all virtualization(emulating OS ontop of mac osx) softwares.