Here's one that doesn't use flight levels and is an example of a misheard clearance using the word "to"
https://en.wikipedia.org/wiki/Flying_Tiger_Line_Flight_66
Pilot was "cleared two four zero zero"
Pilot heard "cleared to four zero zero"
Presumably ATC heard readback "cleared two four zero zero"
Of course as a pilot of a large jet (747), the pilot probably should have had some better situational awareness regarding local terrain, not ignored the low altitude warning and/or questioned the controller for clarification but "to" can be dangerous.
It wasn't a video but a website that had the original advice I was looking for...
N12345
passing 6,000 descending 2,400
Still leaves some room for that error but certainly seems less.