
Your choices, with a brief description of each:
The Champ—Wallace Beery won half an Oscar for his portrayal of a washed-up alcoholic boxer. Co-starred child actor Jackie Cooper at his wailing and weeping best.
Dr. Jekyll and Mr. Hyde—Fredric March won the other half of the best actor Oscar for his dual role as the stuff-shirt Dr. Jekyll and his libidinous alter ego, Mr. Hyde. For my money, the best version of this story, which is saying something considering John Barrymore and Spencer Tracy also did classic takes on this Robert Louis Stevenson tale. Strong support from a young Miriam Hopkins as one of his victims.

The Guardsman—A rare screen appearance by the husband and wife team, Alfred Lunt and Lynn Fontanne, The Guardsman is a comedy about marital jealousy, with Lunt pretending to be another man so he can test his wife's fidelity. Roland Young (Topper) provides topnotch support.
Mädchen In Uniform—German-language story of a schoolgirl who develops a romantic attachment to her female teacher, one of the first movies to explicitly (and sensitively) address the subject of homosexuality.
Marius—First leg of the so-called "Fanny Trilogy," this is a French-language romantic comedy about a young man who can't decide between love and wanderlust. Marcel Pagnol wrote it, Alexander Korda directed.

The Music Box—Probably the best of Laurel and Hardy's two-reel comedy shorts, the boys retell the story of Sisyphus, only this time with a piano instead of a large rock. Won an Oscar for best short subject and was included in the National Film Registry in 1997.

The Smiling Lieutenant—An early Lubitsch musical comedy starring Maurice Chevalier as an army lieutenant who loves Claudette Colbert but unwittingly gets himself engaged to marry a young princess (Miriam Hopkins).

You've got two weeks rather than the usual one to respond, so plenty of time to research your choices. As Thomas Jefferson said, "Whenever the people are well-informed, they can be trusted with their own government; whenever things get so far wrong as to attract their notice, they may be relied on to set them to rights." Which if you squint and don't think too much about it, somehow vaguely applies. So have at it.