New one on me... granted, it's from almost 20 years ago, but I'm sure I'd remember if I saw this back in the day, Foster's and Animaniacs were my *favourites* at that point (heck, they still are
) so I'm certain the combo of both would stick in my mind.
It's a cute ad, anyway, I'm glad it was found! Not sure why it's considered "lost media" as it's available to watch, though. Are they looking for variants of the ad? Going off other CN UK contests, I'd say it's probable that there
were a couple of versions with different kazoo tunes (I'd guess theme songs of other shows that aired on CN/Boomerang at the time), but I wouldn't think there'd be any other differences between ads.