Movie stars? Absolutely.
Musicians? Eh...sometimes. Depends on the music and a bunch of other things.
Athletes? Yes and no...that's a lot of potential trauma and most athletes can't do anything else other than be athletes so they're being paid for what they'd earn if they worked until they day they died (which, let's face it, in football could be tomorrow).
It's definitely a heated topic. Some believe it's perfectly reasonable, other people find it to be a gross injustice. I guess only the people involved really know.