Reddit seems to have a near complete overview already: http://www.reddit.com/r/comics/comments/rnpiw/mindboggling_xkcd_april_fools_comic/ http://www.reddit.com/

Reddit seems to have a near complete overview already: http://www.reddit.com/r/comics/comments/rnpiw/mindboggling_xkcd_april_fools_comic/ http://www.reddit.com/r/comics/comments/rnpiw/mindboggling_x... My favorite most definitely is the military one: http://imgs.xkcd.com/a1panels/961f9f87076b08c0d29f9182d6e1b370a059ddc1f4bacc246bb850fdcb174e44.png http://imgs.xkcd.com/a1panels/961f9f87076b08c0d29f9182d6e1b3...