Peter Lorre - Peter Sings! (Was Frauen träumen - 1933)

Otto Fuessli (Lorre) and Rina Korff (Nora Gregor) sing a duet to the song, "Ja, die Polizei" ("Yes, the Police").

English movie translation: "What Women Dream"

Music translation from "The Lost One" page 76:
Yes, sir, the police, they are the cutest fellows.
Yes, sir, the police, they're always at their best.
The lieutenants are adept at handling women.
And when the men kiss them, they're impressed!
Yes, sir, the police, they fascinate every girl.
Who can't just pass by, one, two, three.
Sure, ev'ry little town has got good looking guys.
But the handsomest of all are the police!

Peter Lorre - The Red Blues (Silk Stockings - 1957)

George Costigan: Adventures of Sherlock Holmes (The Greek Interpreter: best Peter Lorre impression ever -1985)

Peter Lorre: Stupéfiants [1932]

Please forgive me if I botch this. :)

The hunchback (Lorre), a drug dealer, has just kidnapped a young singer who is addicted to narcotics. I believe the plan is to blackmail her family for money. He compels her to make a recording of her voice that he can play over the phone to her family.

This was a German/French co-production. I apologize that I don't know French and am unable to translate this. I just find Peter speaking French to be a beautiful thing! The plot of this movie is about a drug pusher who gets a young singer hooked on drugs. Her brother tries to catch the bad guys and save his sister.

Peter Lorre - M'sieu Cochon (Strange Cargo - 1940)

M'sieu Cochon ("Pig") approaches Julie (Joan Crawford), whom he desires, and gets a blast with both barrels. This is also where Andre (Clark Gable), a prisoner on the island, first meets her. Cochon (Lorre) works on Devil's Island and makes a living turning in escaping convicts to the authorities. For this he is seen as a loathsome stool pigeon. He looks very cute in a white suit, however.