BEIJING, Jan. 16 -- Will Smith thinks it's "crazy" that people like his movies.

US actor Will Smith poses during a photocall to promote his movie "Seven Pounds" in Berlin, Jan.6, 2009.

    The actor - who was in London for the UK premiere of his new movie 'Seven Pounds' Wednesday night - confessed he was overwhelmed by the response from his fans.

    He told BANG Showbiz: "To me, that's how I judge the quality of the material by how people are responding to it. People work hard for their money and then on a Friday night they go to the movie theatre and decide where they're going to put it, and a lot of the time they choose my movies over a lot of other movies. So I think that's very, very crazy."

    Will - who was named Hollywood's top earner in June after he earned 40 million U.S. dollars in the previous year - spent almost an hour talking to the thousands of screaming fans who braved icy temperatures to see him.

    Giant lettering which spelt out 'Will Smith' also impressed the married actor.

    The 'Men in Black' star - who was so cold his eyes were streaming with tears - said: "Oh this is so fantastic. You see that - it's beautiful you know - I told them I wanted my name 40 metres high!"

    In his new movie, Will plays a man with a haunting secret who sets out to redeem himself by changing the lives of seven strangers - but unexpectedly falls in love with one of them.