Here is a guided instructable on how to make your own Interactive LED table using one of the kits from Evil Mad Sciencitst .
Here is a video of my final table in action in the dark, and a photo of what it looks like:

Evil Mad Scientist offer 2 sizes for their table, a 6 panel kit and an 8 panel kit. Both of them can be configured in 3 different ways, so before you can start designing your table, you should choose which size you want to buy.

I choose the 6 panel kit, and this instructable will focus on that size. If you choose the 8 panel kit, you can still use this guide, just remember to change the measurements to your own.

Next make a rough sketch of how you want your table to look.

If you are good with Google Sketchup , I suggest you use that to get some nice 3-D views of it.