10 Most Infuriating Movie Cliffhangers

3. What Happened Next? - 300

Here's one cliffhanger that's absolutely shameless and seems like it's so eagerly setting up a sequel, even though one never materialised. After The Battle of Thermopylae concludes at the end of the film, we then get Dilios rallying the troops for a follow-up battle, The Battle of Plataea, which actually ended Persia's invasion of Greece. The final shot of the film is the Spartans running towards the camera, prepped for battle.

It's the ultimate slap in the face to viewers; get us excited about another battle and then...the film just ends. Zack Snyder could have really given us some extra bang for our buck, but instead we're teased with awesome action beyond the bounds of the film that didn't even end up appearing in sequel form.