Goofs

The film opens with the camera shooting down through a basketball hoop with a chain net and six boys beneath, but at 0:00:48 the shot cuts to a court-level horizontal shot of ten boys around the basket, none of whom are dresses like the preceding six boys. At 0:05:18 more brief shots of the six boys (dressed as in the opening shot) on the basketball court are shown.

From the hospital scene at 1:07:40 Gabe wears a cast on his right arm through the rest of the film, except for the scene from 1:12:47 to 1:13:00 where Gabe rides his Xootr kick scooter (identified at 0:25:35 in the DVD commentary) from the apartment to the tunnel in Central Park, which was actually the first scene shot because first day shooting was rained out at the planned location.

Near the end of the movie, when Gabe first sees his parents reconnecting, Leslie has longer hair. Within a few moments, it's seen at a much shorter length.

When Gabe and Rosemary are trying to make a date, Rosemary says she cannot meet Sunday morning because she is studying for the ERBs to get into Private School (at 0:24:25). In order to get into the New York private schools you have to take the ISEEs, not the ERBs.

Both boards that are broken (Rosemary's and Tim's) have visible seams running down them where they are supposed to split. Tim's is very obvious. Rosemary's is more evident along the top portion of the board.

Gabe claims that he didn't know anyone else but Rosemary on his first day of Karate class. But later when he gets partnered with David Betanahu he comments on how David has had a mustache since nursery school. And the photo shown of young David is the exact same class photo that included young Gabe and young Rosemary. Since you can spot David among the others in the first day of karate class, it can't be argued that David joined later.