Corrected entry: The trombone the Boy George lookalike used had a very obvious trigger, an invention from the early 90's, and an emptying flap from circa 1995, two things I'm sure a 1985 trombone would not have.
Corrected entry: As Robbie is purchasing his plane ticket to Las Vegas, the agent says "The next flight leaves in the morning." It's easy to see sunlight streaming through the terminal windows, so one can assume that Frank and Rosie's anniversary party, which Robbie attended and rushed to the airport from, was held during the day or very early evening. So why did Robbie rush off with his plane ticket, as if he were going to miss his flight? He barely had time to say goodbye to Sammy and Holly.
Corrected entry: When Robbie is mentioning all the people that will never find someone to be with at the wedding he sings at after he gets dumped he starts singing Love Stinks. He goes over to the overweight character and puts the microphone in his face and the character replies 'love stinks', the character gets into the song and trys to grab the microphone from Robbie and when he does you see a wedding band on his left ring finger.
Corrected entry: When George plays a clarinet during the bar mitzvah, the mouthpiece that holds the clarinet reed in place is backwards. The screws that are showing in the front should be on the other side of the mouth piece.
Corrected entry: After Linda stands Robbie up at the wedding, his friend says that Robbie has been wanting to get married since the 3rd grade. Then Robbie's sister mentions that that was the year their parents died, which would make Robbie 8 at the time. Later, when attending Julia's engagement party, Robbie tells a guest that his parents died when he was 10, which would be 5th grade.