TDD and BDD is old school. Make the jump to HDD (Humour Driven Development)
xkcd's Proper User Policy apparently means Simon Says (sudo make me a sandwich) comes #1 in the SlashWeb list, versus the stackoverflow community voting xkcd's Little Bobby Tables to #1.
Conclusion? Either way, xkcd rocks.
But how's this for cool: xkcd's "antigravity with python" actually made it in as a patch to the python source code!