Dunno what to tell ya, I thought the motion controls were great for the most part (especially combat). For what it's worth, I sat directly behind my TV and pretty close to it (less than five feet away). Sometimes Link will spaz out with aiming controls, but you just need to recalibrate.
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Yoblazer: http://i44.tinypic.com/5nw45i.jpg
Watch and you'll see... someday I'll be... part of your world!