Eric Knox is in the old castle talking to Drew Barrymore when she's tied up. He is looking at the camera and over his left shoulder you can see someone bend down or move. You can see it without a DVD but I had to slow it down to make sure. It looks like a shadow but it's definitely a man in the background that they forgot.
It is me again, just another note, Charlie's Angles is still in cinemas during Christmas in Australia 2000. Videos and DVD's take between 5-7 months to hit the shelves AFTER the film has been taken of the big screen (and this also depends on the popularity of the film, third class films may take 3 months). And no, Australia is not behind at all in picture Theaters, under new Hollywood agreements, premiers are shown here at the same time as they are shown around the world, here are a few examples: The Matrix, Wild Wild West, Episode 1 and so on. The film industry does this to prevent illegal home-made-cinema videos making their way around the world before the film does. They try to stamp out piracy. I guess it didn't work for you though.
Yo Matrix... people in the industry have access to these DVD before the rest of the public. They are screeners sent to producers and others in the business. Either this person has a job where they receive the advanced DVD, they work for someone who gets them.
Actually, the man in the background over Eric Knox's shoulder is Bosley. What you are seeing is the video surveillance display of Bosley in his cell. At this point in the film, he is getting up after being knocked to the floor by the axe thrown by Vivian.