This one has been on my wishlist for quite some time. I've got a huge amount of time for George Clooney, ever since O Brother Where Art Thou and the Ocean's films (note to self, pick up Thirteen at some point)
Again, IMDb has this to say:
A law firm brings in its "fixer" to remedy the situation after a lawyer has a breakdown while representing a chemical company that he knows is guilty in a multi-billion dollar class action suit
Also starring Tom Wilkinson, Tilda Swinton and Sydney Pollack, all of whom I rate very highly. Tilda Swinton won best supporting acress Oscar for this, iirc.
Really enjoyed this - it's a slow-burner, nicely played and with a great story.