The Civil War + AK-47s - obviously a flight of fancy, but with interesting groundings in actual history that Turtledove goes over in the appendix. Worth a read.
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After the avalanche of awesome in seasons 3 and 4, this almost puts too much of the brakes on while winding the show down gracefully. Still better than most TV.
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You're tired of hearing the word Epic to describe this show, but this is where it lives up to that billing. Huge character episodes and a gripping war story.
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The cast starts to find the characters and the snowball gathers speed here. Not a terrible place to start if you don't mind missing some of the S1 plot hooks.
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