The Man Who Saved the World (1982)

The film follows the adventures of Murat (Arkın) and Ali (Akkaya), whose spaceships crash on a desert planet following a battle, shown by using footage from Star Wars as well as Soviet and American space program newsreel clips. While hiking across the desert, they speculate that the planet is inhabited only by women. Murat does his "wolf whistle", which he uses on attractive women. However, he blows the wrong whistle and they are attacked by skeletons on horseback, which they defeat in hand-to-hand combat. The main villain soon shows up and captures the heroes, bringing them to his gladiatorial arena so they can fight. The villain tells them he is actually from Earth and is a 1,000 year old wizard. He tried to defeat Earth, but was always repelled by a shield of concentrated human brain molecules, which looks like the Death Star from Star Wars. The only way he can bypass this impenetrable defense is to use a human brain against it.