There is not really a market for apps on your TV anymore...
Reasons:
1. Sony Playstation - This is my alternative to paying for cable.
2. Laptops - This is my second alternative to paying for cable. Most laptops today have HDMI out ports so all you need is a wireless keyboard and mouse with good range and done... HD streaming with tons of possibilities and no cable bill, Hulu, Netflix, DVD's and even computers games
4. X-Box 360 - I don't have on but it offer's similar services
5. Roku and other streaming devices already released
6. TVs with apps built in
I really don't believe anyone is going to get excited about this...