Chris Pine's character name and several T-Rex props throughout the movie are used in reference to the movie This Means War, in which is said that Chris Pine character, FDR Foster, has small, T-Rex like, hands.
The cast has a total of five Academy awards thanks to one from Jamie Foxx (Ray), two from Kevin Spacey (The Usual Suspects, American Beauty), and two from Christoph Waltz (Inglourious Basterds, Django Unchained).
After the sex addict meeting, Nick says, "I need to go to toilets," and Julia has her left hand on the doorway.
This hand is moving up and down on the doorway, each time we see Julia from front or back.
In the beginning after the guys realize they need half a million dollars and start brain storming on the dry erase board in almost every shot of that sequence the "R"s have changed how it is written in "murder".