We're giving Netflix a try, and I find that I'm much more likely to slap a movie I'm not sure of into the queue than I was to pick it up at the rental place. I think it's because there's no immediate expense when I queue up a movie at Netflix, so it reduces the perceived risk of renting something I don't like.
(So far, we're happy, but it's only been, what, a week? I'm sure we'll find *something* to kvetch about.)
edited to add: now, if we could get a combo Netflix/Gamefly membership? *That'd* be nerdvana for sure.