If you enjoy exploring video content on the web, you'll absolutely love Truveo - an extremely impressive and powerful video search service from AOL that helps you find video content from all other video sharing websites (like YouTube, blip.tv), content portals (like CNet, iVillage) and most mainstream media websites (like CNBC, ABC News, BBC, etc).
Truveo provides an amazing array of options (like Google advance search operators) to further refine the video search results. For instance, you can limit the search results based on categories (like Technology), source of video or even the relative importance of the video (like most viewed, rated, recent).
Every search results page comes with an RSS feed, a feature that's missing even in the popular YouTube. And if you are in a mood to browse videos not search, Truveo is again useful - all the viral videos, TV shows, breaking news videos, movie clips, music videos and sports videos are neatly organized in categories.