Thanks to Valve, Mac users can finally claim to own a "gaming rig" without resorting to Boot Camp or causing PC gamers to burst into laughter. Sure, you're still going to be better off cost-for-pixel-crunching with a mid-range PC desktop than anything Apple offers, but for a MacBook Pro user looking to get in a few frags during lunch, the arrival of Steam for Mac is probably the best news they've heard this year -- and luckily that Source engine isn't too hard on older hardware. Mostly the same crop of games that were available to beta testers are available in the final prod
