We post videos by linking them in from youtube. Videos from other sites are not absolutely forbidden, but we know that youtube won't tolerate videos that we won't tolerate. We have instructions on how to post youtube videos: How to use youtube tags. Please follow the format in those instructions to give the posts in the thread a common look.
You may want to review the earlier threads: Part I Part II Part III Part IV Part V Part VI
Try not to duplicate material that has already been posted. There's lots of cool music videos on youtube that we haven't seen yet.