Viva Pinata is just a good old fashion comedic show. Using the creatures of the actual X-Box 360 games and making various stories out of each of the unique creatures that live their.
I'll start with the pros of the show: The writing is good for the most part. The visuals are very well animated and as colorful as you can imagine. Good voice acting and music contribute to the fine quality
Cons: Sometimes things seem a little chliche and like I said in the pros, the writing is good for the most part. There are a few times with bad dialogue. And the show mostly appears for kids, so if you're one of those really mature people it might not appeal to you.
But as far as children's show go this is one I recommend. I'm not going to say it's great, but it's pretty good. Kind of reminds me of looney toons.