I've always loved the movie The Big Kahuna. The only things that kept it from being perfect were the title and the fact that they played that awful commencement address set to music song over the credits. In retrospect it will be ruined for some because it stars Kevin Spacey (along with Danny DeVito and Peter Facinelli).
That being said it is a perfect exploration of the parallels between business and Christianity as practiced in America.
This play, on which the movie was very faithfully based is also excellent. Three guys in a room talking and it's absolutely compelling. I don't care for the way they discuss their wives, but it seems true to their characters. The confrontation between the three men hinges on their purpose for being at a convention and their differing motivations in conversation and business.
Recommended reading, but if you don't feel like tracking it down The Big Kahuna is worth watching. If Kevin Spacey puts you off the film, definitely worth reading the play.