Here is the link. (Sorry I am not going to link directly. Now now. See below.)
http://digg.com/security/How_To_Crash_Internet_Explorer
IE7 will not crash. IE6 goes down in flames.
"< script >for (x in document.write) { document.write(x);}< / script >"
This is going on my myspace.
UPDATE: It does not work on myspace. :(
UPDATE 2: However, this does work on myspace.
{DT}{H1 STYLE=width:1px}{LI}{/H1}
{} = <>
IDEA: All those on my myspace "friends" list are getting this in a bulletin. LOL~
Update 3: Maybe this isn't a good idea. It is going to kill 63% of my traffic.

UPDATE 4: I'm in trouble.

This says IE 6.0, but he was using 7.0, which is not effected by this post.

Do you see that? A technorati watch list?! Crap.