X is for ... Xkcd Rocks

I'm going small today. And probably the last three days :)

Xkcd

Best webcomic ever.  
Well, I love the ones I understand. The rest are all ... math-y.  Here are a few that make me squee :)

http://xkcd.com/910/

http://xkcd.com/943/

 http://xkcd.com/954/

http://xkcd.com/962/

http://xkcd.com/968/

http://xkcd.com/986/

Don't forget to mouse over the cartoon and read the caption!