Netflix is the only way to fly. I'm on the one-at-a-time unlimited plan, and I'm never out of movies to watch.
As a qualifier, I should mention that I don't get a lot of new releases, but that points up their real strength: catalog titles. Blockbuster has limited shelf space, and even that has to be prioritized towards new releases, but in my experience, Netflix can be counted on to have almost everything released in R1; if I get a sudden urge to watch, say, Ice Station Zebra
, I can definitely have it in no more than three business days, rather than rolling the dice that a store in town might