If you're looking for things to do in Ouarzazate, visit Atlas Studios, next to the Hotel Oscar. Flanked with beautiful impropriety by two giant Egyptian statues, these are Morocco's most famous studios. Guided tours start every 45 minutes, and the price is discounted if you're a guest of the hotel. It isn't Disney World, but you do get a sense of just how many productions have rolled through town—including Hollywood blockbusters like The Mummy and Gladiator, and classics films like Cleopatra and Lawrence of Arabia.
For another angle on the Ouarzazate film industry, check out the rather grand-looking kasbah off to the right just out of town on the way to Skoura. One enterprising local producer, frustrated by the increasingly expensive charges being levied on film crews wanting to film around real kasbahs, decided to build his own and undercut the competition.