By Owen Gleiberman
Updated August 08, 2007 04:00 AM

In 2 Days in Paris, Adam Goldberg, handsome in a fuzzy beard, and Julie Delpy, looking pale in black spectacles, are a couple who natter and bicker their way through a stopover in her native city. Delpy wrote and directed this study of a relationship heading (it would seem) for the rocks. She stages it with a funny and diverting improv-y flow, though you wish that less of it depended on the high-concept joke of Goldberg’s testy jealousy over her past love affairs — and that he took a few more breaks from acting like a smug hypochondriacal jerk.