QuakeCon is a great place to show off your case mods. I was only one of many people to spend three hours going up and down all of the isles to get a good look at what everyone was building. The only problem I had with actually covering it all is that so many people were coming in and out of the event.
During the morning when I arrived, hundreds of people were registering and waiting in line just to get in. When I left for a smoke break at 5 PM, the line had actually grown even longer with a new cast of attendees. This happened nearly every day with a new cast of gamers, so there is no way I could have seen everyone.
If you are thinking about attending QuakeCon in 2009 and displaying a modded case, you had better bring you're A-Game. Many of these guys spent a great deal of time and more than one built their system just for QuakeCon.
I enjoyed covering the BYOC area and met several great people. This is the area where you are going to find the real gamers not interested in competing 24/7 and hear a bunch of stories that will have you laughing days later.