My favorite butchering of a show due to external license rights is Beavis and Butthead. My guess is that during their original run on MTV, MTV possessed the rights to air the videos, and the show never acquired those rights. Given the sheer number of videos the series must have gone through, I don't hold out much hope for ever having a complete set, short of piracy.

Hilariously, or sadly, depending on your point of view, box sets of the series say things like "Complete Episodes!" which is technically true, if you consider the episode to be only the non-video content, but the episodes were also largely about B&B saying stupid things while sitting on the couch watching videos.

Daria is another case of that happening. I have seen DVD rips with the audio track from old TV rips floating around somewhere just because people want the music back.

It is a real shame when art gets modified after release due to licensing agreements

You know, I never though of this before, but I'm sure there was an episode of Northern Exposure that ended with Etta James's "At Last," and I'm positive that the DVD version doesn't have the song.

I remember it because it was one of my favorite episodes. I lost my box set years ago, so I guess I won't be verifying that.