The long July 4th holiday weekend kicks off tomorrow, which for many of us means trips to the beach, burgers on the grill and fireworks (only where legal, of course). But it should also mean some time spent remembering those patriots who defended our liberty—both the real ones who fought for our freedoms and those fictional ones who on television and at the movies reminded us what that liberty was all about. With that in mind, let's take a look back at our 10 favorite sci-fi examples of patriotic film and TV.