I am a fan of open web technologies, means that my creations are one click away.
Google Maps API is great for making custom google maps. I used data from the American Mathematical Society to make a map of the PhD institutions along with their ranking.
Light out is a simple puzzle game. The real challenge to the gamer is to use linear algebra to generate all possible solutions and find the one with minimum number of clicks.
Hex out is a hexagonal variation of light out.
The picture above is an example of a Droste effect. The spiralling was first done by Escher in one of his paintings. To understand the mathematics behind it this article in AMS is very useful. As it turns out these are "just" (remove parenthesis if you are a mathematician) holomorphic maps between elliptic curves over the complex numbers.
You can read more about my academic past in my academic CV.
The most current list of my papers can be found at the Arvix.
Lower Bounds on Distances of Improved Two Point Codes - contributed talk for Finite Fields'09, Dublin, Ireland.
I maintain the site agtables.appspot.com. There you will find parameters of algebraic geometric codes computed with different algorithms, developed by my advisor and me.
I worked 2 years as the graduate student liaison for the computer-based teaching program Calculus&Mathematica(C&M). My job involved supervising all C&M courses taught by graduate students and teaching one of them.