Everyone connected with Richard Kelly's The Box is happy to explain the premise: a couple is delivered a box with a philosophical quandary attached. Open the box and they will be rich but someone they do not know will die. Frank Langella (Masters of the Universe, Superman Returns) plays the deliveryman, Arlington Stewart, in what will be a challenging role for him.

"I'm jumping into a whole other genre certainly with a much younger cast.," said Langella. "Cameron Diaz and James Marsden are the hot young actors and it puts me in a new world."

Needless to say, Langella has more than a cameo, so he won't just be dropping off the package and leaving them be. "Believe I'm there for the duration. It's a remarkable script.  Every actor I know says to me, 'How did you get that part?' I'm thrilled."

Just getting into wardrobe fittings has already become a surreal experience. "I met Rich Kelly and his producing partner, Sean McKittrick, the other day having had long conversations on the phone, and I didn't know they were the director and producer.  I thought there were, like, AD assistants.  I met a much older woman who was doing the clothes and these two young guys kept talking and interrupting her and I finally said, 'What do you do in the movie?' and he said, 'I'm the director.'  I said, 'Oh, okay.  You're my boss.'"

The Box, based on Richard Matheson's short story Button, Button, is due in theaters in 2008.