Hi guys,
I'd like to present to you GET TO THA CHOPPA!!1 for OUYA. It was first released for Xbox Live Indie Games on Xbox 360 and we ported it using Monogame, Xamarin.Android, and KonajuGame's excellent ouya-csharp wrapper.
We made some changes to make it run smoothly on OUYA. The major improvement versus the Xbox 360 version is that we can now have actual global high scores using a central backend (we use parse.com). On Xbox 360 we had to use some weird P2P hack to distribute scores between Xboxes which never worked very well.
If you are also working on an OUYA game using MonoGame let me know, I'd be happy to assist you with anything I learned by porting CHOPPA!!1