(at around 40 mins) When the Russian soldiers throw Pither into his cell, the back wall is bare. But when the shot changes to a close-up of Pither, a poster is hanging on the wall.
When the name Monte Carlo is mentioned, the scene changes briefly to Eric Idle in front of a map of Europe, with a pointer. As he points, he says, "Monte Carlo - 100 miles South of Turin, 100 miles East of Pisa, 500 miles West of Bilbao." While he points to the correct places on the map, he is wrong about some of the directions: Monte Carlo is West of Pisa (Italy), and East of Bilbao (Spain).