If you like to have your iPhone or iPod touch mounted in your vehicle, your options are limited. Griffin's WindowSeat (MSRP $29, on sale at Amazon for $23)is an affordable solution that will work with iPod Touch, iPhone and iPhone 3G. The kit comes with the mounting arm with three adapters, a 3.5mm audio cord, dash plate and a sharp angle adaptor for windshields with steep angles.
The fit for my iPhone is very snug. The corners of the back plate is what holds your iPhone or iPod touch intact. To change out the adapters between iPhone and iPod Touch is easy but I find it a little cumbersome (since you can also unscrew the ball joint as it rotates lose in opposite direction). The enclosed 3.5mm audio cord makes it easy for you to rig your device to your car's aux in. There are plenty of clearances around my iPhone for access to power, audio and data ports, as well as the volume control. I personally prefer to use the enclosed suction cup plate so I can mount all my accessories to the dashboard than windshield. The suction cup is made of a rotational control which applies the pressure for a strong hold. For the money, Griffin's WindowSeat is a very good iPhone/iPod Touch automotive mount. Items like this, however, makes having a case on your device hard to use. I hope Griffin come up with a solution for folks preferring keeping their devices in protective hardcase.