SWEEEET install. I was going to go for the Clarion headunit simply for the seamless iPod integration. Then, the price held me back as well the single set of AV inputs and the extra cost of the seperate TV tuner unit.
I was able to get a Panasonic CQ-VD7500U (7" in-dash motorized DVD) for $650 from ebay. The panasonic has built-in TV, 2 video/audio Aux-ins and a rear camera input. It also has great integration with my Pioneer navi unit - even though I can't control the navi touchscreen features directly from the Panasonic (I have a seperate Pioneer screen for this).