Dozens of mistakes and continuity problems with LOTR:

For instance...

In the scene where Sam and Frodo are in the field with the scarecrow, you can plainly see a car cruising past in the distance, from right to left.

Yep, it's another bOing bOing via Fark blink here, but it's a good kinda habit...

5:43:16 PM  [] blah blah blah'd on this    [blinked via bOing bOing]