We all enjoy it when an actor uses a “for the paycheck” role as an excuse to ham it up, but what’s your favorite example of the other extreme? Meaning where an actor clearly has no motivation for a role other than financial and therefore clearly doesn’t care and is barely trying if at all.

Let's be clear; acting is a job and pretty much every actor will have to take roles for financial reasons alone at some point. Charles Dance put it very well here:

"I've done some appalling films. Junk is absolutely the right word. You do what you can with the stuff you're given. It's a misconception that actors make choices. For all but the most privileged few, the only choice is to work or not to work."

But there's a difference between actors who take those paycheck roles in lackluster or bad films and give it their all or chew up the scenery in entertaining fashion and those who clearly are not even trying. See the 2000 "Dungeons & Dragons", a terrible film where you have at one end Thora Birch monotonously droning every line and putting in as little effort as possible and at the other end Jeremy Irons (who openly admitted to doing this to pay for his newly acquired castle) tearing through every scene he's in like a mako shark on a cocaine high. You can't get a better example of the extremes of this.

My personal favorite example of the "don't care" approach is Peter O'Toole in the adaptation of Dean Koontz's "Phantoms." Not a bad movie (Affleck is the bomb in it), but one that got a very negative reaction upon release and one you definitely don't expect the likes of O'Toole being in it. Being O'Toole, he isn't bad, but he's obviously putting in minimal effort and his attitude screams, "Look, I had a bar tab to pay off, sue me." It's something I find very entertaining.

Your favorite example?