If (1) the videos belong to you, you created them or hired someone to create them for you and (2) you have not given away or licensed your rights to republish the videos, then you, in all likeliness, have a copyright in the video. That should enable you to easily and quickly have them removed from the offending websites by filing a DMCA take down with the site's publishers or even the ISP hosting the site. On top of that, you have a case against the person who uploaded the videos for copyright infringement. Unless you registered the videos with the US Copyright Office, you will have to prove damages from the infringing upload.
Answered on Mar 04th, 2013 at 10:43 PM