Neutrino
Light particles that don't feel electric charge and move close to the speed of light; known neutrinos are too 'hot' to be dark matter, but heavier versions are possible candidates.
Common Themes
Videos Mentioning Neutrino

Tim Urban: Elon Musk, Neuralink, AI, Aliens, and the Future of Humanity | Lex Fridman Podcast #264
Lex Fridman
A subatomic particle described as having a size that is hard to define but is 'crazy small'.

What's Going Wrong in Particle Physics? (This is why I lost faith in science.)
Sabine Hossenfelder
Mentioned as an example of a particle whose hypothesis took over 30 years to confirm, contrasting with the current approach in particle physics.

How scientists at Fermilab search for dark matter particles
Fermilab
Light particles that don't feel electric charge and move close to the speed of light; known neutrinos are too 'hot' to be dark matter, but heavier versions are possible candidates.

Knowing God’s thoughts: Einstein’s unfinished dream – Public lecture by Dr. Don Lincoln
Fermilab

Fermilab Physics Slam VIII
Fermilab

Doctor Asks Physics Questions (ft @MedlifeCrisis)
Sabine Hossenfelder
Referred to as the speaker's favorite particle due to its odd, weakly interacting nature and its potential to reveal new physics beyond the Standard Model.