Ehy Violetka! Glad to read some feedback from another ASPer :) Thanks for it, we really appreciate!
Regarding your first point: "what show"-> The idea of the murder mistery is exactly the model we thought to apply to TV series. NBCU - Telemundo streams quite a few TV series (Battle Star Galactica, Law & order, Suits, other) that can be used to create the interaction you were suggesting.
Regarding the TV as a more social experience -> things are a bit more delicate here, let's say that we are thinking of a different business model that could be interesting for NBCU-Telemundo also when many people uses only one Television.
Regardin the technology-> (I love Kinect but it is not a new technology, actually pretty old already ;) ). We believe in the project and would love to see it implemented: virtual or augmented reality are maybe a bit too expensive/not mature enough to be broadly and extensively used in this kind of project.
Anyhow thanks again for your feedback, hope to see you soon!