The Twin Towers were digitally removed from Zoolander
When it came time to release movies that were filmed in NY prior to 9/11, but were released after, what do you do about the twin towers? Some movies decided to keep them in as a tribute, while others took the painstaking trouble of taking them out, in respect.
Zoolander was the first one out after the attack, so it was ripe for criticism for their efforts in digitally removing them.