gistfile1.js

// original (http://html5shiv.googlecode.com/svn/trunk/html5.js)

(function(){if(!/*@cc_on!@*/0)return;var e = "abbr,article,aside,audio,canvas,datalist,details,figure,figcaption,footer,header,hgroup,mark,menu,meter,nav,output,progress,section,summary,time,video".split(','),i=e.length;while(i--){document.createElement(e[i])}})()

gistfile2.js

// kangax version (29 characters less, yay!)

/*@cc_on(function(e,i){i=e.length;while(i--)document.createElement(e[i])})("abbr,article,aside,audio,canvas,datalist,details,eventsource,figure,footer,header,hgroup,mark,menu,meter,nav,output,progress,section,time,video".split(','))@*/

gistfile3.js

// @pornelski version (40 characters less than kangax, yay!)
// test @ http://dl.dropbox.com/u/513327/html5_ie_shim.html

/*@cc_on'AbbrArticleAsideAudioCanvasDatalistDetailsEventsourceFigureFooterHeaderHgroupMarkMenuMeterNavOutputProgressSectionTimeVideo'.replace(/.[a-z]+/g,function(n){document.createElement(n)})@*/

gistfile4.txt

// @miketaylr ripped out the outdated elements (datagrid, evenoutsource) from @pornelski's version
// 19 chars lighter.
// note, however, there's still no ruby, rp, rt, summary, or figcaption elements. so everyone loses. :P

/*@cc_on'AbbrArticleAsideAudioCanvasDetailsFigureFooterHeaderHgroupMarkMenuMeterNavOutputProgressSectionTimeVideo'.replace(/.[a-z]+/g,function(n){document.createElement(n)})@*/