First, this guy should be on every list. My favorite, although he hasn’t posted much this summer, go look through his past videos, they are great:
Matthias Wandel <- Woodworker, with a strong focus on engineering/functionality
Top others:
Jay Bates <- Practical woodworker.
Steve Ramsey <- a.k.a. Woodworking for Mere Mortals
Matt Cremona <- Kickass homemade mill. Traditional woodworker.
Marius Hornberger <- Woodworker, with a kick ass accent (and a small shop)
Tech2C <- 3D printing, and quadcopters, and recents MF lasers!
I like to make stuff <- A ton of different maker stuff. Simple woodworking, CNC, 3D printing, props.
Make Something <- Woodworking, single day projects, sometimes using lasers.
More:
Chris Salamone <- “Modern” woodworker.
Peter Brown <- Funny guy, makes a lot of stuff with woodworking tools and epoxy.
Justin Depew <- Woodworker, with very very small shop.
CNLohr <- Possibly the smartest person on the planet, easily the smartest on youtube. This has stretched the hobby microprocessor hobby to new levels, and it just generally really curious, which makes for interesting projects.