Old CCF intro and Bubbles hosting

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I was surfing the Net when I found a site that had the
JBVO opening (http://www.primalscreen.com/galleryjbvo.html)
Cartoon Network Parking lot Ad (http://www.primalscreen.com/gallerypklot.html)
Yogi's ID (http://www.primalscreen.com/galleryyogiid.html)
Bubbles Hosting (http://www.primalscreen.com/galleryccfshow.html)
Cow and Chicken Japanese Vacation (http://www.primalscreen.com/gallerywhaleape.html)
First CCF opening (http://www.primalscreen.com/gallerycncnfri.html)
and the
Dextrix Ad (http://www.primalscreen.com/gallerydextrix.html)
Now what is Primal Screen?
Are they a company that Cartoon Network Hires to make ads?
I'd like to know.