I just came across this really interesting article about some pretty neat possibilities in Microsoft Excel.
It looks like someone's had way to much spare time and actually created 3D animations using complex algorithms and macros in excel.
Read the whole story here:
http://www.gamasutra.com/view/featur...ionary_3d_.php
You can also download the excel files and test them yourself (on page 3)
A couple of videos on Youtube showing the real time 3D animations in MS Excel.