Radius seems to be available only on the download version of Netflix, and we have it only the old-fashioned red envelope way. Maybe once we've upgraded our hardware we'll switch, because there are a number of movies I'm interested in that you can't get from them on disc.
I've got a movie to recommend but it is slooow. And has a cheesy title which is not at all what the movie is -- It Comes at Night. The feeling of dread builds and builds, and the performances are all impressive.