GoozerNation currently has 14 different videos of Kirby's Epic Yarn online. If you're wondering about this game and want to get a feel for it, this is the place to do it.
Video segments include: Fountain Gardens, how to Gold Medal in Rainbow Falls, the first boss fight with Fangora, Moles and Owls, Lava, Cool Dude, Roast Chicken, Puttin Out Flames, Delicious Fabrics, Magic Man, Contrast Much, a note to developers and Bailout.
More videos are added on a regular basis.
The videos come complete with voice over commentary.