Making Internet Explorer Behave Like a Real Browser

Recently I’ve been doing a lot of cross-browser work (IE 6 + 7, FF and Safari required to function similarly, unfortunately), and I’ve narrowed down my list of hacks/tricks to make Internet Explorer be able to actually render standards-compliant HTML in a manner remotely befitting a modern browser. Here are my list of “go-to” hacks which seem to fix at least 90% of rendering, layout and positioning issues in IE(6|7).