I mostly watch youtube to unwind and not think so hard, a few I tend to get really into:

On cooking & food:

jastownsendandson - 18th century history and recipes

foodwishes - nice succinct no fuss recipes, focus on the recipes

TabiEats - casual/fast food reviews and stuff from Japan

gundog4314 - reviews of military rations

Global news and Culture:

PBS NewsHour - public news, nice balanced and thoughtful news without lots of histrionics

ARIRANG TV - korean state cultural TV, mostly because I have Korean family members, but some interesting shows from time to time also "ARIRANG NEWS" for regional news and local Korean politics and ARIRANG CULTURE for more specific Korean arts stuff

Great Big Story - hard to explain, but brilliant short videos from all over that make you feel better about the world after a hard day

Big Think - another hard to explain channel

TheJapanChannel - mostly interesting vignettes from Japan, I find them kind of soothing for some reason

Talk to me in Korean - supposed to be a language learning course, but interesting insights into Korean culture, sometimes some interesting walks around different parts of Korea, skip the language stuff and enjoy the rest

Abroad In Japan - an Englishman in Japan, very dry humor, endlessly entertaining

Korean Englishman - an Englishman in Korea, less dry humor, also endlessly entertaining

OsiyoTV - Cherokee Nation TV, well produced show on Cherokee topics

2hearts1seoul - nice fairly calm looks at stuff in Korea

NHKWorld - Japanese national shows

Simon and Martina - two hyper hipsters in Asia, I like them, but they can be polarizing

TheKoreaSociety - serious talks on Korea and regional issues

Retrocomputing and gaming and stuff:

Kim Justice - some incredible histories of the UK computer gaming scene, fantastically produced all around, an actual hidden gem on youtube

TNT Amusements - business advertisement for a company that refurbs arcade games, fun crew and can be entertaining and informative from time to time

Pixelmusement - old games, my favorite show is "Shovelware Diggers"...strangely relaxing review of crapware dos and early windows games from a 1000 games CD.

Retro Core - English reviews of retro games from Japan. The guy who does it is kind of infectious and opinionated, but has a definite voice.

Computerphile - interesting old to new light computing topics

The Ben Heck Show - various electronics and retro gaming/computing topics, serious hardware hacking

Top Hat Gaming Man - reviews of various games and stuff, puts a bit of effort into production

Grand Illusions - weird toys and nick-nacks, infectious host

Techmoan - odd old things, just watch it

EEVblog - intense teardowns of everything

Game Sack - great, well produced retro gaming

Metaljesusrocks - another great, well produced retro gaming show

Matt Barton - his show "Matt Chat" has interviews with some absolute gaming legends, amazing stuff

Jeremy Parish - one of the "old men" of gaming journalism, has lots of on-line presence, but does tons of interesting reviews

Cars:

Motor Trend Channel - you know what this is about

fullychargedshow - electric cars

Music:

NewRetroWave

Generic Male DJs

A Tribe Called Red

WinhamhillLovers

Movies:

RedLetterMedia - sarcasm at its finest

Nerdwriter1 - great analysis of films