I liked Grill-Off, it's good for essentially being a free game that you can get from registering a single Wii game if you get all the coin bonuses. The best comparison is that it is like a Game and Watch game; it's a simple concept that starts off slow and gradually speeds up and adds more to keep track of, and the goal is to get the high score. In this case, you use the Ultra Hand to grab meat off of grills when it is cooked, and place it on the plate in front of you. You lose if a piece of meat burns or you drop one on the ground. My only complaint is that, unlike the three-strikes system in Game and Watch games, one miss is all it takes for the game to end. This makes it more challenging to get a high score than in Game and Watches, but considering the light content, that may be a little understandable.
Bottom line is, if you enjoy Game and Watch games or high-score games, go for it.