At first glance the i-Station25 from Logic 3 appears to be your run of the mill iPod dock with stereo speakers. Look a little further, though, and you’ll notice a few features that aren’t of the norm. Sure, it’s got 2x4w stereo speakers, video/audio output, remote but what sets it apart from the pact is the built-in accelerometer which detects the orientation of the iPod Touch or iPhone (yes, it also works with an iPhone) and adjusts L/R stereo accordingly. Other than that, yes, it’s pretty vanilla.
Available here for about $100