If it was on Hulu, then there's no reason to remove it due to copyright. Hulu legally provides several shows and films, and has limited commercial interruptions. (A bit like cable on your PC)
Hulu is actually owned by NBC, and uploads its own content, which is approved by the copyright owners, rather than users, like YouTube or Megavideo.
Users outside of the US can access the site's content using a program like Hotspot Shield
http://www.hulu.com/about