Starts with Sam Worthington
Kathy Ireland (sorry it's dubbed)
ABC Red Carpet
Sam Worthington mentions Zac
Sam Worthington Mentions Zac - TV Guide
Sam Worthington mentions Zac - MTV:
Presenting and Backstage
Youtube won't allow good versions of the telecast clips but click here to be taken to a download of him presenting. (TY Jeezbee).
ABC Press Room
X17 - Arriving and Leaving the Vanity Fair Party
Getty at the Vanity Fair Party
Access Hollywood at the Vanity Fair Party
Vanity Fair's Video page, not too much Zac but a bit in the highlights video.
There might be a few more clips that pop up as the entertainment shows broadcast their segments on it. Unless it is something really awesome or revelatory, I will probably just do an ETA on this post with those clips.