Visible crew/equipment: In the scene where C drives Sonny's car up to meet his date, at the moment he puts the car in park, you can see the reflection of the boom microphone in the bottom left corner of the windshield.
Other mistake: At the beginning of the film when "C" witnesses Sonny shooting the guy over a parking spot, Lorenzo quickly shuffles C upstairs. They are in their apartment not more than 10/15 seconds when a detective knocks on their door. There's no way the police would have shown up that quickly, let alone the detectives.
Chosen answer: They are playing a version of Craps called Street Craps or Ghetto Craps. You can get information about the rules for this game here: http://www.craps.net/rules/street-craps.html.
raywest