So I got the 3DS, and it's awesome. A game that came with the system was something called "AR Cards" in it you place a card flat in a well-lit area and the system reads the card, then places characters over the cards using the scenery. Once I figure out how to get pictures on my computer I'll show you guys, it's really cool, and has a lot of promise, since you can change perspectives by moving the system.
Yeah, it's kinda obnoxious, but you get used to holding it in one spot. About 10 minutes into playing a game I barely even noticed I wasn't moving around at all. If it keeps annoying you though you can turn off the effect, and just run 2D, or even lower the 3D settings so it's not as intense.