Originally Posted by Flounder
Any other suggestions?
It depends on what games you like and also if you only plan on playing native Mac games and not under Bootcamp. With Bootcamp, you'd get the latest games like Tomb Raider (2013) and Hitman Absolution.
Good native Mac games though would include the following:
Call of Duty Modern Warfare
The Witcher 2
Tomb Raider Underworld
Batman Arkham Asylum
Half-Life 2 series
Splinter Cell Conviction
Deus Ex Human Revolution
You get Steam for the Mac, which is a good way to find games, sort by Metacritic score and you can see some of the top ones at a glance:
If you prefer RTS-type games like Starcraft, you can narrow by category.
There's also streaming games to allow you to play some of the Windows titles like LA noire if you don't want to use Bootcamp:
It needs a good internet connection but you don't need to download the game itself.