Donnie Barksdale in The Gift checks in at #15. I have a soft spot for Donnie. IMO, Keanu did a credible job portraying a red neck bad ass. In this case I agree with Ricky:
Say what you will about Keanu Reeves, but given the right project, proper casting, and competent direction, the man can do a decent job. He is far from outstanding in The Gift, but I have to admit that I really enjoyed his against-type casting as a small-town hick.
The entire list can be viewed here.