Bing, my new favorite search engine, has an interesting video feature. When you search Bing for videos, mousing over the results plays a small snippet of the video. This video snippet is from Bing, not wherever you searched, so searching for Hot Midget Porn, you can watch bits of the movies with sound without tripping any sort of filters at work.
There's no way to block this stuff yet. This should be a big waste of time for several months to come.