Tom Hanks is worried that his luck could soon be up, and his successful movie career over.

The double Oscar winner is aware that most stars fall on bad times, and that he has been very lucky so far.

"I look around and know that I am going to pay for it, big time," he commented. "The knives will be out one day. There are quite a few people no longer getting hired who were big stars as recently as 10 years ago."

"So I've already overstayed my welcome. Someone is going to turn round and say: 'See - you are not such a smarty-pants after all, are you?' And although I know that many actors say they've had luck, I've had more than my share. I've had it by the bucketload."