When the team meet in the conference room, in the wider shot Reid is nowhere to be seen, a few seconds later he appears seated at the table between Hotch and JJ.
At 17:23- The table with bottles of water has magically appeared.
When Morgan gets off the phone after talking with Garcia about the list of chemicals he found, the hand holding the phone to his ear changes between shots.
When Hotch is leaving his house in the morning, he is wearing a blue tinted dress shirt, but in the office scene immediately following, he is wearing a white dress shirt.
The terrorists time their ultimate attack when the crescent moon rises, shortly after sunset. However, the crescent moon after a new moon lags behind the sun. It would already have risen, shortly after sunrise. It's setting would similarly be after sunset.
The USA Mall is said to be in McLean, VA. But McLean is a residential suburb of DC, with a small commercial zone. Any land that could have a large mall would be outside its city limits. And those areas would have different city names, like Tyson's Corner or Fairfax.
Jind Allah's Egyptian origin was found out by Emily because Egyptians pronounce J sounds as G. However, throughout their previous conversation, not a single J sound was included in Jind Allan's dialogue.
At 21:25- It would be both quicker and quieter to cut a hole in the fence than it would be to build a ramp over the it.
When Reid tells Prentiss about the anthrax letter sent to Daschle he says that it was sent to him in 2002 while it was in fact sent in 2001.
At 17:38- Jind Allah drinks from a bottle that has been tainted by an infidel.