Favorite obscure actor/voice actor roles

You ever watch a tv show, anime , and notice a well known actor who's not a major character in the series but love that he/she appeared as a guest just for that minor character in an episode? For me, I have to say Phil Lamarr in Invader Zim as Poop Dog comes to mind. I don't know why, but this particular moment makes me laugh hard every time. https://youtu.be/FRUHMwpj1ZI I mean, I love Invader Zim it's such a great show and shame it got cancelled so early even though there is that movie "Enter the Florpus" (I still have yet to see cause I don't have Netflix right now.) But yeah, getting back to Phil Lamarr, Poop Dog is one of my favorite non major roles he's done. The guy is legit talented like he has serious vocal range, and characters I never would've imagined he's done. But there's something hilarious about Poop Dog whose like this grim reaper ghetto dog school mascot spouting slang. It's a really funny idea.