Michael Sheen ended up in the dentist's chair after playing David Frost on stage and screen in Frost/Nixon.
Trying to perfect Frost's famous underbite cost the Welsh star jaw problems that he had to get fixed when filming on the Oscar-nominated movie wrapped.
He explains, "For two years, I had to spend most of the time with my jaw sticking out, and I started to have a problem. I had to have dental work.
"You know the thing that attaches your gum to your lip... I f**ked it up from doing that. I had to have work done on my jaw."
The actor is becoming known for taking on real life characters after playing Tony Blaire twice, Kenneth Williams and Brian Clough in his new movie The Damned United.
But Frost/Nixon was a hit and went on to be nominated for Best Picture at this year's Oscars.
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