Ever read about some of the things that could have happened in TV and film, and almost made it into the final version but didn't?
I was reading recently about a planned ending for Monty Python and the Holy Grail, which presumably was in an early draft but never filmed.
There would have been an actual battle between Arthur's forces and the French at Castle Aggghhh over the grail, and the French would have the upper hand until a group of swallows flew over and bombed them with coconuts. As it was, the Pythons didn't have enough money left in the tiny budget and the improvised army that appears to support Arthur comprised all of the extras, leaving none to be French knights. One of the Pythons apparently suggested instead the filmed ending, with the English all getting arrested.
There's also an unfilmed scene in the official script, which explains where the dragon boat comes from. After crossing the Bridge of Death, Arthur and Bedivere would have met the guardian of the Sea of Fate, who owned the boat and required answers to 28 questions instead of only three. They would have just chucked him in the sea and taken the boat.

There would have been an actual battle between Arthur's forces and the French at Castle Aggghhh over the grail, and the French would have the upper hand until a group of swallows flew over and bombed them with coconuts. As it was, the Pythons didn't have enough money left in the tiny budget and the improvised army that appears to support Arthur comprised all of the extras, leaving none to be French knights. One of the Pythons apparently suggested instead the filmed ending, with the English all getting arrested.
There's also an unfilmed scene in the official script, which explains where the dragon boat comes from. After crossing the Bridge of Death, Arthur and Bedivere would have met the guardian of the Sea of Fate, who owned the boat and required answers to 28 questions instead of only three. They would have just chucked him in the sea and taken the boat.