The DASH actually runs the same application feature set as some the Sony online connected HDTVs. That's where they get their streaming clients such as netflix, Amazon, etc....

In fact, when you go to activate the netflix viewer, it's recognized as a Sony HDTV (Bravia, I think...).

The Chumby component is similar to the Chumby OS, but it's hard coded to link to the Sony Dash web repository so it can't be modified to run apps from chumby.com. It runs in parallel to the video streaming services.