"Hellooooo I'm the Nostalgia Critic, I remember it so you don't have to."
"Hello Internet...Welcome to Game(Film) Theory!"
" He bought too many gaaaaaames... And now we have to play them all-- So all aboard the steaaam traiiin! Choo Choo~
"Hello everybody MY name is Markiplier--"
The list is far too long to even attempt.
Recently I'm partial to those I've named, but I do like just about everyones, PoIIsed, JacksepticEye, Pewdiepie(though I've seen all of 3 videos of his, most are of him playing his own game so.) except maybe Dashie, it's a bit TOO loud and TOO obnoxious but I guess it's one way to stand out so I don't hate him for it.
I don't watch jacksepticeye. But honestly if I had to pick my favorite, I'm gonna have to go generic and pick the intro chuggaaconroy uses. "Hey everybody it's CHUGGAACONROY!" Also the game grumps intro is pretty sweet actually; specifically the Steam Train intro. :3
He does skits or opens with: "Hey what is up guys, Vanoss here..." and gives an announcement. Vanossgaming of course, he cares about his subscribers as much as we enjoy his content, also his friends are funny too, specially Delirious and Nogla