I actively avoid shorts so most of what I watch is long form.
Technology Connections - A guy needing out about household tech
Unlearning Economics - a trained economist turned public edutainer who kept learning after Econ 101, unlike others who shall remain nameless
Behind the Bastards - Chummy laughter about the worst people ever
RPG with DBJ - RPG talk with a focus on creativity and exploring the opportunities afforded by the space of ‘limited only by your imagination’
We’re in Hell - A guy looking at pieces of media and the ideology infused into them by culture
Gresham College - lectures on widely ranging topics, presented by professors but targetting the layperson
The Morbid Zoo - A cool gal doing analysis of movies, usually horror, but sometimes others, with an eye toward ideology and culture (Hellraiser, Smile, Twilight, PotC, etc.)
Folding Ideas - More film analysis, but with a tack toward various criticisms
Doctor Who - the old series are all on the tubes now. Not educational, but fun.
I actively avoid shorts so most of what I watch is long form.