There's a very long, very good thread on the xkcd forums full of them: http://forums.xkcd.com/viewtopic.php?f=2&t=22741 http://forums.xkcd.com/viewtopic.php?f=2

There's a very long, very good thread on the xkcd forums full of them: http://forums.xkcd.com/viewtopic.php?f=2&t=22741 http://forums.xkcd.com/viewtopic.php?f=2&t=22741. Some (maybe all or close to it, I haven't been paying attention) are also up on http://xkcdsw.com/ http://xkcdsw.com/.