Using Excel As a 3D Graphics Engine
simoniker writes "Obviously whimsical but slightly mind-blowing — an Eastern European coder has published video and the Excel tables to get full 3D wireframe running in Microsoft Excel. He even has solid polygonal graphics running. This isn't an Easter Egg by the Excel creators. Rather, he's using formulas to output the graphics, using two different methods, and showing all the variables on-screen in real time as the 3D is created."
Here's a flight simulator in Excel! Sort of. ;)
There is actually a flight simulator in Excel, see this previous comment (or skip right to the page)