Here are some fantastic ideas to help you design a computer desk.  These are all seen on Lumberjocks and some of the designs are very well done and of excellent quality.  We will try to add to this post so that you can get more ideas.  Be sure to check out a couple articles and some video on building a computer desk.  We will have some more posts with places where you can find parts.

Computer keyboard tray

This is a pretty good video showing you how to use a flush trim bit. This is probably the application I use mine for most often (cleaning up a glued up joint) It clearly shows how the profile bearing is guided along the surface where you want the flushness too. These bits are fantastic for this and if you do not have one you will do yourself a favor by having one or two in the shop.

Our shop stocks several size flush trim router bits since you never really know what size you may need. Its kind of like a roundover bit, you really need more than one size.