He's my favorite player to watch at the US Open. Federer always plays on Arthur Ashe stadium (which sucks), so I watch Santoro every chance I get both singles and doubles.
I call him the platypus of tennis. Everything he does is so counter intuitive, "weird", and beautiful
I watched him mop up Dimitry Tursenov 2 years ago on court 11 at the US Open, giving him no pace and slicing the ball. Tursenov is throwing his racquet left and right.
It was great.