The new Regal Gallery Place Cinema in Chinatown (707 Seventh St. NW) won’t offically open until this Friday, but organizers are offering $1 movies, $1 popcorn and $1 sodas today and tomorrow to celebrate. All proceeds from Monday’s shows will go to benefit the DC Special Olympics. The profits from Tuesday’s screenings will go to Project Harvest. According to the entertainment guide at the Post, Monday’s movie and showtimes are:”Dodgeball” (PG-13): 1:40, 3:50, 6:35, 8:45…