Update: The link below is now broken. Microsoft has removed the site and now is redirecting to an IE9 page.
A Rare Moment for Microsoft Advertising.
Alternatively, there are a number of competing browsers for those of you who have old milk...Firefox, Chrome, Opera, and even Safari. Internet Explorer 9 also promises to support HTML5 specifications, so it's a good option as well.
The most surprising thing in all of this is that large corporate IT departments still refuse to upgrade browser versions every year, despite security and usability risks. I think there is a business in there for someone who can figure out how to sell to big IT departments that browsers need upgrading at least annually, if not semi-annually.
My colleague Mike Mason and I spoke about this in our talk "Does Anyone Even Know What this Thing Does?" earlier this year. Companies need to take platform road mapping (and yes, the browser is a platform) more seriously. They need to make sure they don't end up in a legacy system situation earlier than they need to.
Do the right thing, upgrade to a modern browser!