12. John Travolta Mispronounces Idina Menzel (2014)

John Travolta was tasked with introducing Idina Menzel to sing “Let It Go” from Frozen. Instead, he mangled her name into the unrecognisable “Adele Dazeem” with a bizarre accent that left the audience stunned. The teleprompter error turned a simple introduction into instant global mockery, making Travolta an overnight laughing stock.
The flub went viral immediately, with memes flooding the internet. Travolta was invited back the next year to make amends, but the original mispronunciation remains one of the most replayed pronunciation disasters in awards-show history.