Redbox Instant - Have you tried?

I am a bit interested in Redbox Instant. For $8 you get some streaming content, plus 4 movie rentals at the physical box. Plus you can watch on your Xbox which makes life convenient. Link to the official site here.

So my question is, what is the streaming library like? I don't expect it to be great, perhaps like Amazon Prime (which is a small library, but has some good stuff, however the good stuff is also available on Netflix so it is moot).

Have you tried this service yet? What is it like? I'm not really interested in quantity of available titles, but more quality. Plus, are they all movies (being Redbox and all)? Are there TV shows at all?

Please give some feedback if you know. Thanks!