It's difficult working with very rich actors, because inevitably they become a little spoilt, and the managers and agents tend to control things more than is healthy.
The best way in the world to advertise is to get somebody else to run around with the name of your product on their person or showing it around somewhere and not only that but they're paying for it.
I'd rather be onstage with a pig - a duet with Jennifer Lopez and me just ain't going to happen.