This seems to do the same thing
http://www.mrclay.org/2008/09/19/min...-on-mrclayorg/
(newest build found here
http://code.google.com/p/minify/)
Only tough part is template editing... which is why it needs to be plugin.
--------------- Added [DATE]1294960882[/DATE] at [TIME]1294960882[/TIME] ---------------
I found a mob that does this but it doesn't work properly according to some users. When used on vbulletin 4.x, it mangles the css & renders much of the style useless but it's a start.
https://vborg.vbsupport.ru/showthread.php?t=229530
It did manage to cut my http requests in half.