xkcd - comic genius

I've been having a good laugh at the comics on xkcd. Some of my favourites include:

• http://xkcd.com/c168.html
• http://xkcd.com/c166.html
• http://xkcd.com/c165.html
• http://xkcd.com/c163.html
• http://xkcd.com/c156.html
• http://xkcd.com/c155.html
• http://xkcd.com/c153.html
• http://xkcd.com/c151.html
• http://xkcd.com/c149.html

Enjoy :-)