Interesting use of conditional comments: If you use this HTML: <!--[if IE ]> <body class="IE"> <![endif]--> <!--[if !IE]>--> <body> <!--<![endif]-->
with CSS that looks something like: div.foo { color: inherit; } .ie div.foo { color: #ff8000;
then you get all of the advantages of using conditional comments to work around problems in Internet Explorer, without the extra HTTP request of an IE-only stylesheet.
(From paulhammond.org: Conditional classnames.) Via Twitter (Simon Willison)