A short time ago Twitter went offline following reports that the site had been hacked by a group posting under the name Iranian Cyber Army. If you're quick you can head over to Google and get a cached copy of the page minus the graphics. This screenshot came from Google's cache a short time ago.

This may be one of the first times such a high-profile hacking incident was caught, nearly in real time, by Googlebot. Read more about Twitter gets hacked by Iranian Cyber Army and Google gets it all on cache