Google Operating System noticed that Google Video added two search filters to the search options side bar. One option is to filter for videos that are slideshows and the other is to filter for videos that are cartoons.
Here is a picture of those new search filters:
I am not sure how good these filters are at picking out slideshows and cartoons, some of my early tests were not too positive. But for more generic queries, such as [run], it worked pretty well.