TheAtlanticCraft YouTube channel boasts over 6 million subscribers and was originally started in 2012 by two childhood friends Joey and Cody. Since then Joey (JoeBuzz) left and started his own Minecraft dedicated YouTube channel.
It is now run by Joey (TheAtlanticCraft) and his brother Peter (Kraken Kid) and features other top Minecraft player like Cannibal Crab, Blooper, Proffesor Pikalus.
Joey is also the creator of the Voidswrath a website for Minecraft mods and modpacks, containing his most famous modpacks, CrazyCraft and ScrambleCraft.
Although TheAtlanticCreft has a lot of videos on different Minecraft scenarios and skills, the most famous series is Crazy Craft.
If you want to see the tutorials and valuable sessions, this is a great place to start.