FILM: The documentary Eames: The Architect and the Painter takes a look at the personal lives of the revolutionary husband and wife design team, along with their influence on significant events in American life — from the development of modernism to the rise of the computer age. (6:45 p.m., Roxie Theater, 3117 16th Street)

PARTY: American Tripps, the Berlin-style ping-pong party that's been taking the Mission by storm, celebrates Christmas Eve Eve at Project One Gallery, featuring Berlin-style ping pong, dancing, drinking, art, and plenty of merriment. (9 p.m. to 2 a.m., Project One, 251 Rhode Island Street)

THEATER: Roller skates — and chaos — abound in the theater adaptation of Xanadu, in which Kira, a magical and beautiful Greek muse, "descends from the heavens of Mt. Olympus to Venice Beach, California in 1980 on a quest to inspire a struggling artist, Sonny, to achieve the greatest artistic creation of all time — the first Roller Disco." (8 p.m., New Conservatory Theatre Center, 25 Van Ness Avenue)