The technology now is moving away from physical DVD's to video streaming through gaming consoles such as PS3 and XBox 360.  Newer flat panel LCD's and LED's have builtin internet access; create an account on Netflix online and browse through their catalog.  Otherwise, in the United States, many 7 Eleven's and major supermarkets have cheap DVD rentals through a vendor machine.  I have seen rentals for as little as $1.99 per night, a bargain if you are looking for just once-in-a-while entertainment.