In the mission, when you are in the DEA headquarters, there is a telescope in a room. If you look into it, you can see two Mexican wrestlers fighting with melee weapons.
WARNING: MAY CONTAIN SPOILERS
When Ram's brother is overdosing, he mentions one of Quentin Tarantino's films "Pulp Fiction." He says it reminds him of the scene where Mia (Uma Thurman's character) is overdosing, and Vincent (John travolta's character)... more