On p. 59 of this week's Entertainment Weekly, they have an interview with Keith Richards.
Did you ask Mick for any acting advice before playing Johnny Depp's dad in Pirates of the Caribbean: At World's End?
He's the last person I'd ask in the world! [Chuckles] Are you kidding me? I might give him a tip here and there. But no, as an actor Mick is very good at being Mick. I didn't even ask Johnny. Johnny had told me, "Well, all of [Jack Sparrow's] moves are based on you." I said, "That's why you paid for the dinner, eh?" I just went there and did my stuff.

You just gotta love Keef. Thank you, SP.