This scene was filmed, but relegated to the post-credits sequence of the film. Some films, including Richard Linklater 's School of Rock , take the idea of the post-credits scene to its limit by running the credits during the main action of the film. Another example is the stinger at the end of Harry Potter and the Chamber of Secrets which features a post-memory loss Lockhart. Enhanced application continued in August, , when in Masters of the Universe Skeletor's head emerges from the water at the bottom of the pit, saying "I'll be back! Video games , particularly those with complex stories, also use post-credits scenes. The cinematic release of The Matrix Reloaded demonstrated the sequel set-up use of stingers by featuring the trailer for The Matrix Revolutions.