Another good channel is:
https://www.youtube.com/user/KidBehindACamera
Naturally, he's a magnet to trolls because he's popular, reads the comment section, and he's generally fucking nasty. What really seems to get some pants rustling is if you make an account with the name making fun of him, for example, "fatfuckbehindacamera" is a bit more commonly used. His fans will defend him, other trolls will like your comment if it's pretty funny. Weird how we help each other out like that.