Executive Producer Matt Swanson has a cameo. He plays the salesman on one of the television commercials, before Gwyneth flips to the Christian Mingle commercial. His lines are, "...stop it, stop being poor... now buy my book!"
The church, to which they go with his family, is a Catholic Church, easily shown by the crucifix above the alter. Most other Christian denominations only display the cross, and he refers to being "born again". The Stations of the Cross is another clear give away.