I've gone Netflix crazy over the past couple of weeks—stepping up to the 5 DVDs at a time plan. I've nearly finished the first series of "24", and I have been slowly building a queue of documentaries I've missed over the past couple of years. I don't live in the sort of neighborhood where very many documentaries are available for rent, so I tend to buy a lot of them when renting would do.
I just downloaded Netflix Freak, which provides you with a Mac Cocoa interface instead of the web interface. So far the only advantage I can see is that I can drag and drop my queue.
Added Hacking Netflix's RSS feed as well.