A man who draws pictures for the computer explains the space doctor's big idea about time and space using only simple words. [more inside]
The XKCD Holistic Browser allows you to type in a web address and get sent to one typed by someone else. (NB: Results may be NSFW or even outright harmful. Take suitable precautions.)
xkcd had an idea to counter YouTube comment stupidity, and apparently someone at YouTube was paying attention. Not everyone is convinced however. (And there's always Comment Snob).