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Sitting alongside Dan on The Oprah Show in 1989 was his Ghostbusters and SNL co-star Bill Murray. When one woman in the audience asked Bill about his signature smirk, he had a ready response. "I think that generations of Irishmen were beaten for pig stealing and our faces kind of end up this way," Bill joked. "I don't mean to be smirking, but it's a look that says, 'I'm really interested in what you're saying.'"