Answers:

  1. The Odd Couple     +     The Ten Commandments     =     Cheaper by the Dozen

  2. Around the World in 80 Days     -     The Magnificent Seven     =     Winchester '73

  3. 101 Dalmations     +     Passenger 57     +     Summer of '42     =     200 Motels

  4. The Two Jakes     +     Three Days of the Condor     +     The Three Amigos!     =     Dinner at Eight

  5. The 39 Steps     +     Four Weddings and a Funeral     +     12 Angry Men     =     55 Days at Peking

  6. Sixteen Candles     -     Apollo 13     +     Six Degrees of Separation     =     Nine Months

  7. 42nd Street     +     North Dallas Forty     -     Five Easy Pieces     =     Airport '77

  8. Catch-22     +     Force 10 From Navarone     =     Thirty-two Short Films About Glenn Gould

  9. ( Ocean's Eleven     +     Plan 9 From Outer Space)     x     Anne of the Thousand Days     =     20,000 Leagues Under the Sea

  10. Twelve O'Clock High     -     The Dirty Dozen     =     And Then There Were None