Yup, there sure is a whole lot of really great videos out there showing stuff awesome stuff from Cataclysm :-)
And just so you know, many of our official fansites are posting really cool Cataclysm previews and videos on a daily basis, so be sure to check those sites out as well: http://www.wow-europe.com/en/links/fansites.html
It could be interesting to know what you guys are most exited about, though... Afterall, there really are a lot of videos out there showing a lot of different stuff from Cataclysm, so which part from a video made you go "GIEF! Must play it NA!!!!!!1!1"?