OMG. Why didn't I find this addon sooner? I absolutely HATE, HATE those stupid fake movie trailers that keep showing up. It is always the same people, so the ability to block a Channel is AMAZING!!! Now I never need to see "SirMarvel" or any of those other hacks again, so automatic 5 stars. Definitely use this in conjunction with "YouTube Watchmarker", because people should not be getting multiple views unless intentional.