Another Tool for Discovering Your Favorite Letter, by Dan Waber
A slower, more minimalist meditation on letterforms. This version has a more limited, but (I think) more effective, range of control, and direction can now be reversed by hitting the spacebar. I highly recommend starting with the default letter at the default settings and stepping the speed down one step at a time and allowing at least 2 - 3 rotations to happen before making the next step down, and then systematically stepping the speed all the way down to one. I think you'll find the variety surprising, and that it’s worth doing the same for every letter. The first tool of this type is here.
Source code: letterpeat_2