Great suggestion, EE. Rogozhin is a complicated and well made character, and Myshkin, of course, is one of the great characters of literature. There seems to be a strong opposing duality to them. But if Myshkin (as most believe) is a Christ figure, then who does that make Rogozhin, the anti-Myshkin? The implications of that question make the final scene (where they are in the sack together) a shocking one. It's a great book.
The Idiot is also a sentimental favorite of mine because it was the subject of the first literary discussion I had on this site. I was new and everyone was ignoring me, but this really nice lady named Gladys decided to talk with me about Myshkin and Rogozhin. As I remember, Gladys thought Myshkin was a straight-out (that is, non-ironic) Christ figure, while I was pointing out that a lot of people near him end up get ting destroyed. She threw some proof texts at me and I threw some Pauline theology back at her. No one conceded. Gladys still pops in sometimes (though rarely), but she has never had much else to say to me. I've always hoped there were no hard feelings over the debate (it can be hard to tell sometimes). I really do appreciate her kindness to me when I was new.
Here is the thread if you are interested in reading it or even continuing the discussion. If not, don't worry about it. I just thought you might want to talk about Rogozhin. (The conversation with Gladys starts on page 2).
http://www.online-literature.com/for...42#post1273742