http://xkcd.com/ (maintained by Randall Munroe) is a fantastic website for mathematics, physics, and computer science themed cartoons. I would also recommend clicking the “What If?” at the top-left corner of the page. If anyone knows of any other good math-comics, please comment about them below!
Math Horizons has an interview with Randall Munroe in a recent issue.
An older issue has an interview with Bill Amend, who creates a newspaper comic strip called Foxtrot, which regularly features math. Here is a link: