Dan the Unspeakable!
I'm Dan Uznanski.
Here are some things I've done:
D&D 4th Edition Character Sheet: a character sheet for 4th edition D&D, designed so that characters are valid at all times.
Multiplication Drill: a simple multiplication drill. My best time is 56 seconds for the default settings. How can you do?
Map projections: a short rant about using map projections to texture spheres.