FENSLERFILM, creators of the Public Service Announcements (re-dubbed comedy versions of the end of G.I.Joe cartoons), have been issued with a letter telling them to take down the PSA content because it 'violates copywrite'. That's bull. They're not profiting from this and its clearly meant as a joke. If they just put up a disclaimer or something, that should be enough. I guess big smelly corporate guys just don't have any sense of humor.
I'm sure you can still find them out there somewhere, maybe on peer-to-peer. Once its out there, you can't get rid of it.
UPDATE: you can still see a couple on www.heavy.com.