Trivia: Ben Affleck is the third actor to play Jack Ryan. His predecessors are Harrison Ford (Clear & Present Danger, Patriot Games) and Alec Baldwin (The Hunt for Red October).
Trivia: When Bill Cabot meets John Clark at the airport in the rain, it was Liev Schreiber's idea to have Clark waiting without an umbrella.
Trivia: The SuperBowl game was filmed in Montreal, Quebec in Canada and the two teams are the Montreal Alouettes and Toronto Argonauts of The Canadian Football League. They just put them in different uniforms to film them.
Trivia: Ciarán Hinds, who plays President Nemerov, didn't speak Russian. He was able to learn all of his Russian dialogue within two weeks.
Trivia: The spray can that John Clark uses to cut through the chain link fence, at the compound in Ukraine, is supposed to be a real-life CIA chemical spray known as "Ice Piss." When asked if a real can of Ice Piss could be acquired for the scene, the technical advisor replied that he didn't want to go to prison.
Answer: The song is the classic "Nessun dorma", composed by Puccini and sung (in this version) by Bruce Sledge.