Revealing mistake: In the opening shot of the film, at Rockefeller Center, the shot begins at ground level and tilts up the building, but it was shot from the top of the building down to ground level and then reversed - all the people on the ground are walking backwards.
Desk Set (1957)
1 revealing mistake - chronological order
Directed by: Walter Lang
Starring: Spencer Tracy, Katharine Hepburn, Gig Young, Joan Blondell
Continuity mistake: When Katherine Hepburn and Spencer Tracy are on the roof eating lunch, she opens and eats her sandwich over and over again.
Mr. Azae: You don't care whether you impress people or not, do you?
Richard Sumner: You wait until you get my bill. You'll be impressed.