Corrected entry: Near the end of the film Knox is flying a Huey helicopter and the Angels hitch a ride by shooting it with a spear gun and dangling on the line behind it. Suddenly adding about 200kgs to a Huey in flight like that is going to cause all sorts of problems with the trim and airspeed of the aircraft - the pilot would know immediately that something was wrong.
Corrected entry: I'm a helicopter pilot, and let me tell you that if the weight of my aircraft (somehow) goes up by say, 200 kgs - and the three Angels combined must weigh that much - in flight then I'm going to know about it. There isn't a single flight characteristic that wouldn't be drastically affected. How come the bad guy flying the Huey near the end of the film doesn't even notice?
Corrected entry: When the Angels begin their investigation, their first port of call is Roger Corwen. Cameron Diaz says "Palm Pilot", handing it to Lucy Liu. We then see a Windows CE device downloading and a Palm Pilot uploading. All well and good - the Palm Pilot's uploading its data to Lucy Liu's CE device (which is in turn downloading it from the Palm Pilot). Problem is though, as they leave the drive through, Lucy Liu's looking at the diary on Roger Corwen's Palm Pilot - why transfer data if she's going to steal it? The alternate explanation and hence problem is that Cameron Diaz hands Lucy Liu a CE device, not a palm pilot (it's much shinier). In which case she could be saying "Palm Pilot", meaning "transfer the data to your Palm Pilot". This solves the problem of the drive through, but doesn't explain why Lucy Liu was uploading her own schedule to Roger Corwen's diary...
Corrected entry: At one point in the movie, Knox says that he's "going to torture and kill your boss." All he intends to do is blow him up with a missile, which would probably be relatively painless. This doesn't really sounds like torture to me.
Corrected entry: At the party where the angels go under cover with Bosley at the party, Alex is wearing a strapless red dress. Shortly afterwards, when they are chasing the "creepy thin man", Alex takes off her red dress and we see her wearing a black catsuit. She couldn't have been wearing it under, could she?