Back, now, at 7:42, with the outrageous and terrifying television prank pulled off on unsuspecting elevator passengers while cameras were rolling. The videos have gone viral around the world. And are... See More
Back, now, at 7:42, with the outrageous and terrifying television prank pulled off on unsuspecting elevator passengers while cameras were rolling. The videos have gone viral around the world. And are raising big questions about whether reality tv has finally gone too far. Nick watt has the story. Reporter: That woman is an innocent bystander. Those guys with the coffin, they're actors. The elevator doors close, watch this. This brazilian tv show snags victim after victim. Reporter: This has gone global. People like to watch this stuff. But has reality tv just crossed the line? It's gone way, way, way beyond anything we could have ever imagined in "candid camera" days. Reporter: Just last week, cian wayne houcher was burned in a prank gone wrong on live tv. He is still in the hospital with first-degree burns. Now, there's even an arrest warrant out for the show's host. More and more producers are playing with fire. There are consequences to really outrageous reality television. We just don't know what all those consequences are because we're in untested waters. Reporter: This contestant on a german game show nearly killed himself, somersaulting over a ving car on live tv, with 10 million people watching. If this is where we are today, what would have to happen in the next five years to top it? Reporter: One more taste of that brazilian show. This time, lights out and -- Reporter: I'm laughing. But I'm not so sure I should be. For "good morning america," nick watt, abc news, los angeles.
This transcript has been automatically generated and may not be 100% accurate.