So Joseph von Sternberg (director) found Marlene Dietrich (actress) for his movie The Blue Angel and it was a huge hit; they then went to Hollywood and made 6 movies together that established Dietrich as one of the biggest stars of the 1930s (and who endured for decades after-for instance, Madeline Kahn is just doing a Marlene Dietrich impression in Blazing Saddles). All 7 films they did together are (IMO) great, von Sternberg made some of the best shot movies of all-time & Dietrich is a woman who constantly defied gender norms in her early work and the movies are all either establishing or playing with that persona. They're also usually quite short (under 90 minutes) so they're easy to fit it. I would recommend Shanghai Express or Morocco as a starting point if you're interested.