Your favorite public builder(s)?

I am curious about your favorite public builders and
why you like them?
where do you follow them ?
which part of what they do fascinate you?
I like Geohot. He is founder of comma.ai .
I usually check his stuff in YouTube
He figure a lot shit out while he doing stuff and he won't shy away to do some stuff for fun. (I don't think he has money problem)

I like to follow more public builders so shot the shit here.