Stardust Memories (1980)

Directed by Woody Allen

Shot in beautiful black-and-white, Woody’s send up of Fellini’s 8½ contain some of the finest moments in the Allen oeuvre. Particularly Charlotte Rampling’s scenes, seemingly stolen-moments: her breakdown in close-up and (my favorite moment in all Woody’s films) her, almost-too-candidly, reading a magazine one morning as Louis Armstrong plays Stardust.*

Here's the trailer; and for those who have seen the movie, the scene with Ms. Rampling.

* This 50-word review was written in 2006.

The Apartment (1960)

Directed by Billy Wilder

Billy Wilder was a genius at mixing comedy and drama, especially in this 1960 Academy Award-winning picture (co-written by I.A.L. Diamond). Thematically adult, but sweet tone-wise: Lemmon and MacLaine stumble into romance and into trouble. Lemmon’s reflection in a broken compact mirror are what screenplays in screenplay-heaven are made of.*

Here's the trailer; and for those who have seen it, this is the broken compact scene. 
Also, a review by Roger Ebert and a New York Times review from when it opened.
* This 50-word review was written back in 2006.