I'm curious what Mac hardware specs people are expecting to play Valve / Steam games on as they start to arrive. If you have a minute, post the specs of the machine you would like to play on? Good specs include machine model, CPU speed, RAM size, and GPU type. A weakly written spec is something like "I have an iMac." A well written spec is more like "I have a 21" iMac Core 2 Duo 3GHz, 4GB RAM, OSX 10.6.2, with ATI 4670 GPU". Also, if you are running Leopard (10.5.8), maybe take a moment to indicate how strongly you want to stay on 10.5.8 and avoid the upgrade to improved drivers in 10.6.x.