Corrected entry: The scene in the bar with the motorcycle gang is set in 1968 but the jukebox is playing The Beatles' "Come Together" which wasn't released until September 1969. (00:57:00)
Corrected entry: Right before Sonny shoots the guy in front of C, the guy hits Joe Pesci's windshield with a bat. The windshield doesn't shatter or break open or anything, it just cracks, but you see Joe Pesci come out of the car holding his head in pain as if he was hit with the bat. He would have had to have his head pressing against the windshield in order to be affected at all by the impact from the bat, which he didn't.
Correction: He HAD just been in a head-on collision. It is not unlikely, if he didn't wear a seatbelt, that his head flew forward and into the steering wheel or windshield. As such, his pain comes from the collision, not the bat hitting the car.
Correction: The cars never hit. This was definitely a blooper.
Correction: Come Together is playing before the jukebox is started during the fight. When the jukebox is hit, The Ten Commandments of Love is being played.