Peter-Paul Kock: Blink (QuirksBlog)
A great explanation of what Blink is and what it means
Paul Irish: High-res browser logos
They are 32bit PNGs, each have their own official shadow treatment, and no background matte color.
Utilu IE Collection
This works. Goodbye and good riddance, three IE-dedicated VMs.
When Can I Use
"Compatibility tables for features in HTML5, CSS3, SVG and other upcoming web technologies."
IETester
A "free browser that allows you to have the rendering and javascript engines of IE8 beta 1, IE7, IE6, and IE5.5 on Vista and XP, as well as the installed IE in the same process."
Microsoft: Internet Explorer Developer Toolbar
Invaluable for troubleshooting web development in IE. Wish I'd known about this before today!