Positive Youtube channels?

What are your favorite youtube channels to watch when you're in the mood for something positive and uplifting? No genre restrictions or anything, just something that really oozes the joy and passion that the creator has.

I'll throw this one out there to start: Bicycle Touring Pro. He makes wonderful, slow paced and positive documentaries about his solo and group travels on his bike around the world. If you ever want to just zone out for a moment, throw this on and you just might be inspired.