Knald eller fald Skuespillere og folkene bag
Walter MatthauWillie Gingrich Ron RichBoom Boom Jackson Lurene TuttleMother Hinkle Marge RedmondCharlotte Gingrich Ann ShoemakerSister Veronica Sig RumanProfessor Winterhalter Helen KleebLaw Firm Switchboard Operator and Receptionist Bartlett RobinsonSpecialist #1 William ChristopherInterne (as Bill Christopher) Robert P. LiebSpecialist #2 Martin BlaineSpecialist #3 Herbie FayeMaury - the Equipment Man Billy BeckMaury's Assistant Lisa LinskyGinger Gingrich (as Lisa Jill) John Todd RobertsJeffrey Gingrich Keith JacksonCBS Football Announcer Herbert EllisTV Director (as Herb Ellis) Robert DoQuiMan in Bar (as Bob Doqui) John AndersonAbraham Lincoln (uncredited) Jim BrownRunning Back - Number 32 (archive footage) (uncredited) Daniel ElamBar Patron (uncredited) Rudy GermaneCommuter (uncredited) Chester JonesCook (uncredited) Chuck SchodowskiStadium Cameraman (uncredited) Jon SiloTailor (uncredited) Billy WilderInstruktør / Forfatter / Producer I. A. L. DiamondForfatter / Producer Edward G. BoyleSet Decoration Robert LuthardtArt Direction Joseph LaShelleDirector Of Photography Daniel MandellFilmklipper André PrevinKomponist af original musik 
