xkcd Webcomics

These are from xkcd

A webcomic of romance, sarcasm, math, and language.

(click the arrowhead to hear a song)   

Warning: this comic occasionally contains strong language (which may be unsuitable for children), unusual humor (which may be unsuitable for adults), and advanced mathematics (which may be unsuitable for liberal-arts majors).

They also have a lot of fun t-shirts for sale in their store....