I just received the Belkin TuneSync for iPod for a song via Woot.com, one fo the first sites to offer “a deal a day”.
Since most of us have protective cases for our iPhones, they won’t fit into the regular Apple iPhone dock anymore. I had read in the Woot forum that this Belkin TuneSync docks with iPhones with their cases on (mine’s from Incase). True enough, it works as long as you don’t use any of the supplied iPod dock adapters. As a bonus, it’s also functions as a powered USB 2.0 five-port hub, so connecting bus-powered devices is a breeze. Comes with a huge power adapter though.
If you’re interested, you can get the Belkin TuneSync (for iPhone) on Amazon.