YouTube adds overlay ads, TubeStop stops them
But this is the internet, so everything's interactive. Clicking on the ad pauses the video you're watching and brings up a commercial. Because that's what you really went to YouTube for in the first place. To watch commercials. Actually, that might be true. Those Japanese commercials are almost as wacky as the game shows.
Anyway, if you're satisfied with the level of distraction offered by YouTube, it turns out there's a pretty simple way to prevent the ads from popping up. TubeStop is a Firefox add-on that prevents YouTube videos from auto-starting. When you see a YouTube video embedded in a web page, you usually have to click the video to make it start. If you visit that video's page on YouTube it will auto-start, which is kind of annoying if you open a few tabs with different windows. TubeStop lets you start them one at a time without having to click pause on each video first.
Anyway, it turns out that TubeStop has magical properties that also prevent the new overlay ads from popping up. It's sort of like AdBlock for YouTube that way. The trick has something to do with the fact that the ads only show up on YouTube and not when a video is embedded on another site. Whatever the reason, we're just impressed that it took all of two seconds for someone to find a TiVo for YouTube ads.