Harrison Ford has revealed to LA Times that George Lucas is currently thinking up ideas for a fifth installment in the "Indiana Jones" franchise. "It's crazy but great," he said. "George is in think mode right now."

Ford added that another film is a good and attractive suggestion. "It's automatic, really, we did well with the last one and with that having done well and been a positive experience, it's not surprising that some people want to do it again," he said.

So is it Lucas who will be putting a story together, or does Ford and Steven Spielberg have a chance to throw in some ideas? "Really, it comes from the ethos, from the ether," said Ford. "It's natural. It's a way of nature, of course, success breed opportunities ... also we don't stay as closely in contact as have in the last year, that's part of it."

Ford added that he would not be interested in making an animated "Indiana Jones" film, a notion that became at least a possible option after Lucas took his "Star Wars" theatrical saga into the computer-generated realm with "The Clone Wars" this summer.

"I'm not philosophically against doing animation roles but not for Indiana Jones," he said. "I'd hate to see it reduced in any way from the movies that we have done and the way we have done them."