(http://i51.photobucket.com/albums/f395/sinsithedog/su_doku.jpg)
Lots of maths humour http:\www.xkcd.com (//http://http:%5Cwww.xkcd.com)
Tabletop roleplaying was funny but which comic is the binary sudoko ?
http://www.xkcd.com/c244.html
I also liked the the idea of submitting a bug report to god ( think he uses bugzilla :-P )
http://www.xkcd.com/c258.html