Geek alphabet

Having visited E. last weekend, I know that we will both be quite busy for the rest of the semester. But we might have some readers out there, and there are always RSS subscribers happily surprised by our eccentric posts. So, for the next n days, we'll be featuring a letter from the Geek Alphabet (don't click it! then these posts will be superfluous!), possibly with some commentary from fontes or efontes.
Via MetaFilter.