Tightrope walking in Skyward Sword was the only motion-controlled action that pissed me off. For some reason it took me 75% of the game before it finally clicked. :P
The digging minigame in Okami induced quite a few groans, I must say.
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WayForward Kickstarter is best kickstarter: http://www.kickstarter.com/projects/1236620800/shantae-half-genie-hero