Always loved Scorsese's penchant for narration, however...
This almost felt like a "live interview". The part where Sam mentions a job change, he says it in such a way like, "Then I changed my job title to, uhhhhh, food and beverage director". Then Nicky's narration right up until he gets hit with a baseball bat.
Don't get me wrong, I love this movie. It's a classic for sure. I just thought this was a bit strange.