Nintendo and the Pokemon Company has announced Pokemon TV for the Nintendo Switch. After downloading the app from the eShop, you’re able to watch classic Pokemon TV shows and movies right on your Nintendo Switch for free.
It has the first two seasons of the show as well as a bunch of newer series as well as a bunch of movies and Pokemon specials. There’s also a kids section for those newcomers to the Pokemon franchise.
As far as Nintendo apps go, it’s fairly fleshed out with the ability to hold your progress in episodes/seasons and it runs really well.