Following up on my post iPhone-based Home Automation Gets Fancier, here's a link to an Automated Home story about a free home controller that works with the Creston home automation system.
Creston is a high-end, professionally installed home automation system. Similar to Savant, which I've written about previously.
The number of iPhone remote control systems has grown so much lately that it's difficult to keep track of them, but when one catches my eye I'll continue to post a note here. If there's one that you're finding invaluable, please do let me know.