La caja de las sorpresas

Peter Cook's wife, Wendy was nine months pregnant when filming began. Producer and director Bryan Forbes promised them that he would let Peter leave the set as soon as Wendy went into labor. He kept his word, and Peter made it to the hospital just in time for the birth of his daughter, Daisy. Forbes, Dudley Moore, Sir Michael Caine, and Peter Sellers filled his dressing room with flowers and champagne, in celebration of Daisy's birth, when he returned to work.

Just before the train crash you can see the smoke and steam going back into the engines, signifying the trains were in reverse and the film played backwards.

"Certain Funereal & Military Airs played by Her Majesty Queen Victoria's Temperance Seven (who actually number eight)"

Featured in Hollywood: The Gift of Laughter (1982)