Jim Carrey’s another one like that for me. As a stand-up and In living Color (or Colour if you will) he was super original and funny. The Mask and Ace Ventura were great. And Dumb and Dumber. Then it kind of got repetitive. He tried a darker tone but that didn’t work as well.
He did end up tapping Jenny McCarthy though, so not a total loss. Everyone sells out eventually.