Today is the 40th anniversary of the first broadcast of Star Trek. Oh happy day for us geeks! This article says the show was about "liberal imperialism", though it does take note of the Federations mindlessly relativistic "prime directive" (thank God the British rulers in India didnt repair behind the prime directive when they saw suttee about to be practiced).
The best analysis of Star Trek remains Paul Cantors invaluable Gilligan Unbound: Pop Culture in the Age of Globalization.
P.S. Comedy Central recently held a William Shatner roast. It wasnt very good--too much crude humor--but there were a couple of good lines, such as the comic, noting Shatners now-full figure, who said, "Bill--you have let yourself boldly go! You know Bill, they make 1 percent milk now.)