Gettysburg
Produced by both Ridley and Tony Scott, this was a excellent in-depth documentary about, perhaps the Civil War's most bloody battle. It was a turning point for the Civil War as well as American history, not without a price, over 50,000 casualties from both the Union and Confederacy combined.
The program featured some great narrations, computer imagery of the battlefield and some excellent reenactments from the battle. Those interested in the Civil War or American history, I highly recommend this.