If you do your web development in linux and haven’t seen ies4linux, get it immediately. It’s brilliant.

Run their script, it downloads some cab files from Microsoft, and then you can have IE 5, 5.5, 6, and 7 all running on your linux machine (via wine). Easy installation, and its very mature.

Here’s IE5, IE6 and IE7 running at the same time on my Ubuntu desktop (hard to tell which is which):

Goodbye windows box.

Dead simple Ubuntu instructions. At the time of writing, you need the beta version to install IE7.