Yup. Metal Jesus has some good stuff.
Happy Video Game Nerd: Far more than just a parody of the AVGN, Derek Alexander is an excellent reviewer.
I also like Pat the NES Punk a good bit. The interaction between him and R.O.B. is usually awesome. Avoid his Flea Market stuff and you'll be fine.
These Playvalue videos are a couple of years old now, but they're still a good watch for classic game history.
http://www.youtube.com/user/playvalue?feature=
I would recommend you check PeteDorr and HappyConsoleGamer.
They are both really down to earth, knowledgeable person and the production value of their videos is great.
http://www.youtube.com/user/PeteDorr
http://www.youtube.com/user/HappyConsoleGamer
I just uploaded my first video. If you could check it out and let me know what you think that would be awesome. Also, check out the channels I'm subscribed to. I suggest checking all of them out.
Atari: 2600, Jaguar
Microsoft: XBox, XBox 360
Nintendo: NES, GB, GBC, SNES, N64, GameCube, GBA SP, Wii, New 3DS, Wii U
Sega: SMS, Genesis, Game Gear, Nomad, Sega CD, 32X, Saturn, Dreamcast
Sony: PS1, PS2, PS3
Wanted: 7800, Neo Geo CD
I'd have to say my favorite is GameSack, Metal Jesus and Classic Game Room are awesome too though.
CGR
Pete Dorr
Metal Jesus rocks
AVGN
captain8bit
Luke Morse
Happy console gamer
Alpha Omega Sin
Those are my favorite youtubers. It was kind of funny upon joining this forum to see Pete Dorr is a long time member. I tend to like Alpha Omega sin and how he gets in your face. He is the true angry video game nerd.