Just recently I've been picking up on some films by Phillip Seymour Hoffman that I'd missed while binging on 70's, 80's and 90's trash. With him, you get:

Charlie Wilson's War
Capote
The Master
Moneyball
Synedoche, New York
Punch Drunk Love
Almost Famous
State and Main
The Big Lebowski
Magnolia
Boogie Nights
Hard Eight

Which is not bad, but I'll still be an action fanboy and say I'd pick Arnie.

As for an actress...I'd probably go for either Meryl Streep or Marion Cotillard. Can't go wrong with either of them, mostly.