I often get a surprised look from the people I work with or friends when they see me using one of the several multi-tabbed web browsers. It always surprises me that more people don't use them, especially power users. What they are is a container application that looks just like Internet Explorer but allows you to open many web pages within it. It's a more sensible approach than opening many IE instances and littering your taskbar. Plus it's better use of your memory. Most of the multi-tabbed web browsers only consume around 30-40MB of memory where you can hit that with only a few IE windows open. Most of them use the IE web browser engine so it's not like you are risking a new rendering engine. Most of them also offer some things that should be built in to IE, like popup ad blocking, mouse gestures, skins and auto fill form. Now I command each and every one of you to go out and download at least one of them, try it out and I guarantee that you will see the light --
Avant browser - Freeware. I used it for over a year and decided to switch. The author issues release almost on a daily basis. I got tired of this because he was always inadvertantly breaking something whenever he tried to add a new feature or break an existing bug. Test, test, test first before releasing!!
Green browser - Freeware. Written by a German whose download page is in german but you can switch to English when running the browser. Right now this is my favorite browser and use it at work and at home.
MYIE2 - Freeware. I use it from time to time. It's come a long way and is as good as the rest now.
Crazy browser - Freeware. I used this for a year also. I finally dropped it when it was crashing too much. Since then they probably have solidified the code.
Slimbrowser - Freeware. Never used this one before
NetCaptor browser - Shareware. This one is shareware and really not worth it considering the freeware alternatives are just as good.
Mozilla - Open source alternative to IE. It has it's own rendering engine and works really well on most websites. You lose the ability to view some websites that take advantage of IE's extensive dom (that is not compliant with W3C specs).