I really liked seeing Kirby being picked as Wii game of show. Even though it probably won't be a difficult or epic title, the way they took a unique art style and just ran with it brings out a sense of child-like amazement every time I watch the trailer. Simple things like rearranging level structure through zippers or pulling buttons make my jaw drop. Also, the fact that it's being handled by the team that created Wario Land: Shake It! gives me a lot of confidence because that game was beautiful and had wonderful level design (even if beating the game was easy to do without getting all the secrets, hidden treasures, and achievements).
Zelda looked great, just like Epic Mickey and several other titles... but none brought the same smile to my face like Kirby did.