Wow, I'm late to the Ouya party.
I really like the idea and am fascinated to see if it will materialize. I'm tempted to Kickstart since the $100 price point would be easy enough to justify with limited return... but just don't have enough confidence that (a) this will really deliver at the $100 pledge point, or (b) any meaningful software support will be provided going forward.
To me it feels like one of the handheld emulation machines you see coming from China all the time - cool idea, neat hardware, but generally useless for most people and ignored after brief excitement at launch due to lack of original content. Hopefully that's not the case here.
Best of luck to them, and if things work out then I'd definitely consider buying in the future.