I totally agree. Why would I watch a video if I'm looking to navigate somewhere?

However, big brands might find creative ways to use them on search results. Check out the one for Pedigree (http://search.yahoo.com/search?p=pedigree) This commercial first ran during the Super Bowl and is pretty funny. I'll bet certain campaigns could do well in search, prodding the user to dive into the ad experience more (i.e. hangintherejack.com)