What's a piece of media you remember seeing that's now lost?

I'm sure I've seen plenty of lost bumpers and segments. I might have even recorded them. They're probably gone now. I wish that I had saved them.
I've also seen the lost Wiggles episodes that aired on Sprout. I also recorded those. They're also gone now.

An Ovaltine TV ad that used the melody of Michael Learns To Rock's Sleeping Child. This was in Bangkok in the 90s.

I remember seeing some of the missing Romeo episodes back in the day.

The "Nicktoons Gets Zombified" shorts. They lived rent free in my mind for that past like 10 years or whatever without me actually having proof they were even real so it drove me nuts, so I was super stoked to find other people here who remember em too lol

Time to beat a dead horse!

The DBZ JBVO episode. I saw it when it first aired, and have continually contested the air date everyone has agreed upon because it doesn't match my personal timeline. However, the first date that came up in the search years ago, does. So that left me with the conclusion that it must have aired at least more than once, and that I saw the original airing.

What I remember:
1) It was a sped up Frieza episode. I distinctly remember Johnny saying "there's that Frieza guy"
2) The person who requested this was a little girl.

Here's where my memory could be wrong:
1) The little girl requested this show for her brother. I was a little girl with an older brother who loved DBZ, I could have easily just confused this with personal details.
2) The other half was a Bugs Bunny episode.
3) It was the summer of 2000. I stand by this one though because this was before a move to another state, and later I couldn't watch JBVO because it changed time slots to another time. I was on Mountain time in both states.

So many fucking YouTube videos, man.

I've literally started a fucking list of old YouTube videos that i used to watch as a wee lad that are now suddenly gone.

I feel like alot of minecraft videos i grew up with have become lost, im still hopeful that its just me being bad at searching for them and they're still out there hiding from me lol