The Man Who Knew Too Much (1956)
Jimmy Stewart is back again, this time opposite Doris Day as a naive American couple vacationing in Morocco. When a French spy dies in Stewart's arms and the couple's son is kidnapped, a tense international espionage story plays out. Stewart is chased by the bad guys, since he knows too much about an assassination set to be carried out in London. The scene known as "The Albert Hall Scene" is about 12 minutes long and contains no dialogue whatsoever, delighting film students and cinephiles the world over -- it's a risky filmmaking move and a Hitchcock masterstroke.