The actor, 41, is delighted at the huge success of the J.J. Abrams-created show, but admits his work on Lost has forced him to turn down other, more lucrative movie roles.
And so Fox, who made his name on 1990s teen TV show Party of Five, has vowed never to return to the small screen once Lost wraps at the end of season six.
He says, "I am getting these cool offers now, and often I can't take them because of my responsibilities to Lost. I'm well aware that the success of the show is a big part of why I'm getting the offers and so my priority is to the show.
"But I won't be doing anymore television after Lost. That level of commitment to one character is just something I won't do again."
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