Use of Internet Explorer 6 (IE6) has reportedly dropped to 1% in the US, on the web at least. See the full story on Engadget. Unfortunately there is a little exception: enterprise use, where it no doubt remains a fair bit higher.
It's scarcely believable that any person or organisation is still using such an antiquated, unsupported browser, but yet it persists. We have worked with one such company recently where the design requirements were to design for IE6, adding around 30% to the cost of the work.
For all sorts of reasons, if your organisation is still using IE6 then the IT team/department, and the CIO, have failed in this aspect of their responsibilities. It's time to ditch the excuses and eradicate this scurge. Say no to IE6!