I don't have any specific videos to recommend, but if your goal is intellectually interesting subjects that have the potential to change your perception... I can think of a few.
I'm sure a simple search on vacuum decay will give you plenty of results.
Vacuum Decay as it pertains to the Ultra-Dense Higgs Field, and Quantum Tunneling.
Quantum Tunneling is somewhat relevant here as Gaf often discusses the most current chip sizes. The current usually revolving around the current use of 7nm chips. If you've ever wondered why it's so hard to get much smaller, and what holds us back from forever going smaller and smaller, well Quantum Tunneling is the single largest reason. At the Quantum level, particles have a habit of magically disappearing and reappearing a short distance away. Which doesn't bode well when electrons do this inside an incredibly small chip.
But I'm assuming most here are already somewhat familiar with this phenomenon. But what happens if, for example. Even one single Higgs Boson were to Quantum Tunnel into its ground state. Currently the Higgs hangs out in a relative dip at around 126GeV. But unlike all other particles, the place it currently resides isn't it's natural ground state. That being considerably lower, and called the Ultra-Dense Higgs Field.
The chance of a Higgs particle Quantum Tunneling into that field is statistically small. However, out of the bajillions and bajillions of particles that make up your back yard, much less the entire universe.... If even one of them were to do that, what would happen? Well, that would ruin the ending and negate the entire purpose of watching a video now wouldn't it.
So get out there and find out just what sort of chaos would ensue.