10 Movie Cameos That Left Us All Speechless

10. Bruce Willis - Split

Perhaps the greatest trick M. Night Shyamalan ever pulled wasn't the all-timer twist at the end of The Sixth Sense, but by shooting and releasing a sequel to his 2000 superhero movie Unbreakable without anyone knowing.

Despite premiering at Fantastic Fest four months before general release, Split's secrets remained mostly contained until mainstream audiences got to see it for themselves and marvel at its stunner of an ending.

In the final scene, after Casey (Anya Taylor-Joy) has been freed and The Horde (James McAvoy) has fled, Shyamalan cuts to a diner where various patrons are discussing The Horde's similarities to a certain wheelchair-bound maniac, before Unbreakable's David Dunn (Bruce Willis) joins the conversation and drops his name - Mr. Glass (Samuel L. Jackson).

Though Shyamalan's follow-up Glass ultimately turned out a colossal disappointment, this reveal was so expertly executed and brilliantly surprising that audiences well and truly believed the director had gotten his groove back.