In 1956 the film was sold to the Columbia Broadcast System company to be broadcast on television after several theatrical re-releases. With each distribution deal, MGM received more and more money for broadcast rights, and consumer demand for the famous film drove up prices and ratings. In a traditional format, CBS has aired it for several years, each with high ratings, as television's evolution from color to quality ensures more audience viewing globally. The Wizard of Oz paved the way for future filmmakers and special effects artists to shine in its path as both an excellent feat in storytelling and visual effects. The Wizard of Oz has spawned countless sequels, both in live-action formats like Wicked and movie sequels like Oz the Great and Powerful. These films never matched the emotional impact and replaced computer-generated graphics with reality. The esteemed film critic Leonard Maltin said, "No film will ever, or will, replace 1939's The Wizard of Oz... (Oz the Great and Powerful) simply won't have the same resonance." The legacy left by The Wizard of Oz is considered one of the most influential films of all