Recently saw this (again) on cable. I noticed towards the end of the movie, real life Chicago Outfit mobster turned informant, Frankie Cullota, is playing "himself" as a hitman. He was part of Tony Spilotro's "Hole in the Wall Gang" in Vegas and flipped for the Feds when they were all caught breaking into a big jewelry store on the 4th of July. This was shortly before the whole thing came crumbling down. In the movie, he is the guy who whacks the "suit case guy" who fled Vegas and was hiding out in a tropical resort. Before Frank blows the guys head off he has a great line spoken in the best "Chicagoese" while his victim is trying to run away...he says; "Where da you dink you're going, jag off!" BLAM! BLAM! I think Cullotta acted as an unofficial advisor for "Casino"...after all - he was actually involved. He said the real Tony Spilotro scared the hell out of him. BTW - it is believed that actor Frank Vincent portrayed Cullotta in Casino...with a different name, of course - I think it was Frank Marino?