10 Movies You Didn't Know Had Secret Post-Credits Sequences

9. Harry Potter And The Chamber Of Secrets (2002)

You could argue that the best thing about the otherwise blandy second Harry Potter movie, Harry Potter and the Chamber of Secrets, is Kenneth Branagh's spot-on performance as egotistical and fraudulent Defense Against the Dark Arts professor, Gilderoy Lockhart.

Having lied and cheated his way into a teacher's position at Hogwarts, Lockhart eventually finds himself facing off against Harry Potter and his companions in the titular Chamber o' Secrets. But Lockhart is a hack, and his attempt to erase Harry's memory actually backfires and ends up working its magic on him.

As a result, Lockhart is permanently rendered in a state of catatonic adolescence. The movie's humorous post-credit sequences reveals the name of Lockhart's latest biography ("Who Am I?") and confirms that, yes, he's still a mumbling buffoon.