Which Movie's Ending Left You Desperate To See What Happens Next?

A weak ending can kill a movie, dead. But a strong enough ending — or a big enough mindfuck in the final moments — can send you out of the theater with your mind racing. Which movie's final scene left you dying to see what happens next?

Please include a picture or clip of your chosen movie. And please mention the title and why the ending left you dying to know more. Thanks!

Top image: Pandorum. The final moments set up a much more interesting story about surviving on a new planet, possibly with the remnants of the zombie army also having survived.