I am going to make a multitouch table, much like the Microsoft Surface. There are two schools of thought on multitouch tables, projector or LCD. With LCD, you actually take the LCD out of the casing, and using a backlight, can mount it into the table, like so:

 
Image shamelessly ripped off from http://wiki.nuigroup.com/Diffused_Illumination_Plans

I got the monitor today, an Acer X223W. I plan on posting as I go with this.