During the scene in which Harvey (Gabriel Macht) talks to Forstman (Eric Roberts), he struggles for a moment to remove his wire. This was kept in for realism.
The card which Harvey (Gabriel Macht) gives Woodall (Zeljko Ivanek) in the grocery store is a Monopoly 'get out of jail free' card.
In the scene where Harvey approaches Woodall in the video store, there is a copy of The Spirit (2008) in the background which stars Gabriel Macht.
Last episode of season 4.