In 1971, the legendary comedy troupe, Monty Python, went to Germany to film two episodes of: Monty Python's Fliegender Zirkus.
The Pythons were reluctant to do the episodes - largely because they had to do the shows..in German. The only problem was - none of the members of Monty Python could speak German. The Pythons had to phonetically learn the scripts - to appear like they knew German - to very mixed results.