Great thread... I stopped watching "TV" a long long time ago, I spend that time watching interesting online content now and many of the Youtube channels already mentioned are some of my faves, here are a few more I enjoy. It tends to depend somewhat on what I am doing in my real life, for instance, I'm remodeling my home so I've been watching a lot of carpenter finish work channels, which has been both helpful, but also shows you how BAD your local "craftsman" are compared to true craftsman out there. With that, here's a completely wide assortment of channels:
Sailing SV Delos
I'm not into sailing or boats but its incredible getting lost in Brian's world living an alternate life outside the corporate grind, on a sail boat traveling the world; I stumbled on this one day and never left.
Emelia Hartford
Tons of good car channels already mentioned, again, not a car guy, but Emelia is cute, does all her own wrenching, and has a more low key channel not full of Lambo's and Ferrari's.
Active Self Protection
The host does a great job breaking down real life self defense encounters and going over lessons learned; I find it both entertaining and educational, especially useful for someone who carries a firearm daily for self defense.
Marty Music
Mauricio Murua
Two of my fave guitar channels; Marty is more for beginners but is a great teacher and just a fun dude. Mauricio is a beautiful guitarist, mixes in a lot of voicings, theory, and just opens you up; I like him precisely because I'm very different so his style and content challenges me and I think he's a beautiful artist.
Inside Carpentry
Finish Carpentry TV
Real carpenters, definitely shows you what kind of hacks you have to deal with when hiring local handymen. Love watching these guys build things.