Shouldn't these camera based controllers have at least two cameras working together, so that they can triangulate 3D positions?
I highly recommend books from www.artofproblemsolving.com.
Also, Relativity Visualized by Epstein is a wonderful book.
Who tagged this "get a life?" You shouldn't even make a joke like that.
To the student--check out the Ross Young Scholars Program and other similar summer math programs. Also, if you haven't already, check out artofproblemsolving.com.
Does anyone here work at Best Buy (corporate)? The Results-Only Work Environment they have implemented sounds ideal.
Politics: A strife of interests masquerading as a contest of principles. The conduct of public affairs for private advantage. -- Ambrose Bierce