xkcd is a webcomic created by Randall Munroe. The comic's tagline describes it as 'a webcomic of romance, sarcasm, math, and language.' It has received mention from The Guardian and The New York Times. The subject matter of the comic varies, including statements on life and love (some love strips are simply art with poetry), and mathematical or scientific in-jokes. Some strips feature simple humor or pop-culture references. Although it has a cast of stick figures, the comic occasionally features landscapes, intricate mathematical patterns such as fractals (for example, strip No. 17 'What If' shows an Apollonian gasket), or imitations of the style of other cartoonists (as during 'Parody Week'). The comic is available under the Creative Commons Attribution-NonCommercial 2.5 License.
Contributions by Ybbor, Jreferee, and Beezhive.