Check out The Legend of Zelda: Skyward Sword's introduction during Nintendo's Pre-TGS press conference. Miyamoto gets on stage with Hylian Shield and Master Sword in hand and discusses some of the deep gameplay mechanics in Skyward Sword. Here it is:
Well 50 or 100 hours is quite different but it does seem like there's a ton of stuff to do. Bug catching?! Sign me up! Please Nintendo, release a super-cheap Nintendo Wii Skyward Sword bundle so I can play this game.