For me, it's very easily Dan the man! His youtube name is liferegenerator. I love watchin his vids! I found them about a month or 2 ago and have been watching them ever since. He's just so real and honest, it's refreshing. He just gets up there in front of the camera, makes some recipes and talks to ya about life. He's very inspiring ; )
Here's a random vid of his I favourited awhile back.
Thought I'd share that. Who do you like to follow on youtube? Post a vid.