http://www.youtube.com/watch?v=i_3RgF5Op3w
Look at the way they talk to each other and what they say there, more importantly look at how serious Sammy seems when saying he's good and how shocked/horrified Jamie looks at the prospect of Sammy betting what they both know is a winner.
Also, who says stuff like, "I like you" "I'm trying to be nice" or any of the things they are saying to one another if they are really trying to take as much money as possible? Its just too weird that you have AA vs. KK and basically play it face up with the guy holding Kings looking horrified that they guy he knows has Aces will bet it. Something is not Kosher here IMO.