Known as much for its campy signature theme — “Flash!” performed by rock legends Queen — as for anything else in the actual movie,  the 1980 cult classic Flash Gordon is an outdoor film favorite that’s perfect for tonight’s showing at the Central Library in St. Paul. Dashing Flash Gordon and his band of cohorts travel to the planet Mongo where they find themselves up against the tyrant, Ming the Merciless, in a battle to save Earth. Movie starts at dusk (approx. 9:30pm) and is free. For more information, visit