http://en.wikipedia.org/wiki/BS_Zelda:_Kodai_no_Sekiban
I never knew about this! It seems like a really cool idea - The game is broadcasted as opposed to downloaded, and all the voice acting and cutscenes were live-action... In the article it says "...other than that the game was rendered completely unplayable (until the advent of emulation)", so I'm guessing there'll be a rom of it somewhere. Worth checking out.
I've had a rom of it for a few months. It's pretty cool that you can choose between a boy or a girl, but the random events bug me. I couldn't find anymore dungeons, so I stopped playing it about a week after I got it.