War and Peace, any version, but the one from 50 years ago with Henry Fonda and Audrey Hepburn is especially excruciating.
You should see the 8 hour Russian version of WAR AND PEACE shown in the USA back in 1968. It went from boring to exciting (first part) to boring (second part) to WOW!(Third and 4th parts).
In the Henry Fonda version the battle of Borodino lasts about fifteen minutes,
In the Russian version, almost a full ninety minutes! Well worth it to watch! Watch for the scene where the French cavalry attacks the Russians, who swing out of the way and the French are met with a line of cannon fire.
Get the Russian Cinema Council version, not the Kultur chopped up version!