Hell, one of the best science fiction movies in the last years is "The Man From Earth" and it doesn't need much more than a log cabin in the middle of nowhere and a bunch of talented actors!
That is a pretty good movie. A little convenient at times in its plotting, but it's well worth watching. Also, it has just about my favorite title ever.
Those mentioning BSG: if you hack off Daybreak, S4 is indeed pretty great. With the exception of that one episode about Tigh punching far above his weight class, sexually speaking, which was not offensively bad but tremendously boring and unnecessary.
But, of course, Daybreak does exist.