If you have Netflix or similar service, make sure to put the 1940 Alfred Hitchcock film Foreign Correspondent on your list. It is superb. Very good acting (one man got a supporting actor Academy Award nomination for his efforts), amazing suspense (but not over the top like some films), action sequences that wouldn't be seen for another 30+ years, and phenomenally stupendous dialogue. It's the funniest suspense movie I've ever seen, mostly because of the dialogue (although there are a few sight gags here and there, too).
The story revolves around reporter Johnny Jones who is sent to England by the New York Globe on the eve of WWII. He's to get an interview with a Dutch cabinet minister who is working to avert war, and he is to use the help of Stephen Fischer, head of England's peace movement. However, Jones discovers Fischer is actually a German spy ... at the same moment he's about to ask him for his daughter's hand in marriage.
Foreign Correspondent. Don't miss it.