I’ll let you in on a wee secret: Gerard Butler’s accent is a bit of a running joke in Scotland. When he’s speaking naturally, as he is in this video, he sounds like any other big braw guy on the street. But when he’s starring in Hollywood films, the vowels elongate and he slows down, like a Martian who’s stolen the body of the Scotts Oats Man and is trying to fit in.
I can do a cracking impression of Gerard Butler. I say "I'm Gerard Butler" in an American accent.