Ah, I work at Staples as one of the electronic experts there. I worked a 5:30am - 1:30pm shift this morning and it was actually really quiet when I came to the store. There was only 1 guy waiting but more and more people showed up around 6am right before we opened our doors. Even then, it was very melodramatic as I expected hordes of people to push each other and long lines. That wasn't the case as the lines were short (for BF standards anyway) and there weren't any physical fights.
There were only a few bad customers. One lady brought in a Walmart ad saying they were advertising a Hewlett Packard computer for $450 or something but the ad didn't list what model it was. Our store had an HP that was $889 (the spces look pretty good actually) but obviously it wasn't the same model. The old lady moaned and complained for 30 minutes and finally left the store.
There was another guy who purchased a $40 chair that normally goes for $130. He got his chair but when he came home and opened the box, a crucial part was missing. By the time he came back into the store, all the chairs were gone so he couldn't do an exchange or anything. He was pretty pissed off but he was too thick headed to realize that we weren't trying to shaft him but rather, we were just out of physical chairs. He even said that one of our sweet cashiers "woofed" at him.
It seems like the 6am people all came in the store looking for the 256mb PNY Attache Memory Drive that we carried. That ran out around 7am. Too bad we didn't carry more of that (our store had 25 to begin the day with). The silly Staples 615 joules 6 outlet adapter went really fast which surprised all of us. The 160gb Maxtor Hard Drives for $75 - $35 rebate didn't go as fast as I had expected. After rebates, its rougly a quarter per gig - can't beat that! The Netgear 54g networking bundle (router + pcmcia) went pretty quickly but not as quickly as I had expected either. What shocked me was the AT&T 900mhz cordless phone. That went almost as fast as the PNY Attache.
When I had left the store around 1:30pm, we still had a couple of Early Bird specials left in stock. We had a crapload of the Linksys 10/100 NIC left. We still had 5 of the Proview 17" LCDs (we started the day with about two dozen). The Proviews don't seem that bad (it has a response time of 16ms).
All in all, it was my first Black Friday experience and I feel damn lucky. It was a relief to have a good sized crowd come in because it brought business but at the same time, it didn't bring chaos.