Hollywood actor Matt Damon turns up to interviews as his alter ego 'Mr Smiley', in order to give away as little information as possible and keep his private life private.
The 36-year-old - now a happily married father of one - credits ex-girlfriend and Good Will Hunting co-star Minnie Driver for the useful tip, which Damon admits has helped him deal with life in the spotlight.
He says, "Early in my career, Minnie told me to create a character. She told me that whenever I did interviews I should be this other guy, Mr Smiley.
"I still bear that in mind 10 years later - this boring, smiley guy, turns up and does my interviews for me, which lets me get on with my life."