The Strand Theater, 119 N. Main St., Zelienople, will show the Bing Crosby/Danny Kaye classic "White Christmas" at 7:30 p.m. Friday and Saturday and at 2 p.m. Sunday. "National Lampoon's Christmas Vacation" starring Chevy Chase will be shown at 7:30 p.m. Dec. 26 and at 2 p.m. Dec. 27. Tickets are $5 for general admission or $4 for senior citizens. Call 724-742-0400.

<B>Rangos Omnimax Theater</B> at the Carnegie Science Center, One Allegheny Ave., North Side, is showing "Volcanoes of the Deep Sea," "Mysteries of the Great Lakes" and "Under the Sea," plus, at limited times "The Polar Express." Admission cost varies. Omnimax is not recommended for children younger than 3. The science center is closed because of Steelers home games on Sunday and Dec. 27. Tickets for most shows are $8 for adults and $6 for senior citizens and children. "Polar Express" tickets are $10 for adults and $8 for senior citizens and children. Call 412-237-3400 for show times.