I just picked up the keyboard dock from Best Buy and would have to say that I'm blown away. The only downside at this point is that I have to pull the iPad out of the Apple case to put it on the dock.
You can use the keyboard without the charger plugged in, or plug the charger in while using the keyboard and still charge the iPad. The keyboard actually set up as a nice stand while sitting on my lap. What a mix, charger, keyboard and stand all in one, and the entirety still fit nicely in my small Targus Citygear bag.
The real downside was that I kept reaching for the mouse while it was docked. Something about the setup suddenly made my reptile brain think I was typing on a laptop.