CBS has put the entire original Star Trek series online, 3 seasons (1966 - 1969), for free viewing. It would appear however that you require a US ip address as I am unable to see any of the content. Interestingly, when I click to play the shows I get a Star Trek like computer voice telling me that "This content is currently unavailable." Come on CBS, all I wanted was a Sunday morning matinee of "The Trouble With Tribbles"!
