QuakeCon is underway, and to celebrate id Software in conjunction with Bethesda has lined up most of their back catalog at crazy, bargain basement prices. You'll find Doom and Wolfenstein titles on the iPhone App Store starting a mere AUD $1.19, and 66% of a bunch of titles on Steam. They're only on sale until Sunday, but each day until then you'll find another great deal made available.
Most impressively at the show thus far was John Carmack's demonstration of their forthcoming shooter Rage, running on the iPhone. Believe it or not, it's still using id Tech 5, the same engine that powers it on consoles. It runs at 60fps, and will "kill anything done on the Xbox or PlayStation 2". If you're not yet impressed, he even insists it will run on the iPhone 2G. What a wizard. It will be out later this year, and will undoubtedly be the best looking game on the platform.
Lastly, indie developers and those who just like to tinker will be wrapped to know that the source code for Wolfenstein: Enemy Territory and Return to Castle Wolfenstein are now available to the public. You can find the links to the packages on the official id Software FTP server below:

Gamers-Underground.com Message