The movies on Netflix's list are probably better than the new releases. In fact, the real manipulation is the idea of new releases, that half the demand should be for this season's movies. The actual best movies of all time are probably not on this week's best sellers list. It's a Hollywood marketing artifact: because buzz causes a superlinear advertising conversion rate, it works best to promote movies in short bursts. New releases also skew revenue from rental stores towards Hollywood (since rental stores have to buy enough for peak demand) so you can't blame Hollywood for doing it.