It's been many years since I saw this one, but it just "tickled my fancy." The US remake with Hanks and Belushi was ok, but the original had more spark. (I think casting Hanks and Belushi was as close as we could get to the original with big name actors. It was like seeing your friends perform "Taming of the Shrew".) The physical comedy of the best friend makes this good story even better.
Review of The Tall Blond Man with One Black Shoe
