Throughout his career Kahler has appeared in a number of films also featuring several of his fellow future (and later former) Indiana Jones costars:
- Force 10 from Navarone (1978) as German Soldier, with Harrison Ford (Indiana Jones), Michael Byrne (Ernst Vogel), Paul Humpoletz and Michael Sheard (Adolf Hitler and Oskar Schomburg).
- The Boys from Brazil (1978) as Arnold Schwimmer, with Denholm Elliott (Marcus Brody).
- The Dirty Dozen: Next Mission (1985) as General Sepp Dietrich, with Michael Sheard once more.
- The Bourne Identity (1988) as Gold Glasses, with Denholm Elliot once again as well as Terry Richards (best known for playing the Arab Swordsman).
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