Saturday, December 30 brings two modern holiday classics to the DOME with “Elf” at 6 p.m. followed by “National Lampoon’s Christmas Vacation” at 8 p.m. Films will be shown in industry standard picture ratio using a state-of-the art projection system and 11,600 watt digital sound system. Beer, wine and other concessions will be available. Tickets for all eight features are on sale now and are available online at GreatScience.com or by phone at 216-621-2400. Tickets are $10 for a single movie, $9 per movie for two movies purchased together, or $7 per movie for three or more movies purchased together. Discounted parking is also available for $3 per night (when purchased in advance).