Google Video has added a new feature that allows you to restrict results to only those that are playable in TV view.  TV view allows you to navigate through search results while playing a video at the same time.  As of late, Google Video search has done a really nice job of integrating better with other video streaming websites.  Initially the majority of search results would come from either Google Video directly or YouTube, but searches I’ve performed more recently have provided results from other video sites as well.