As much as I like RiffTrax, it just doesn't have that public access charm that Mystery Science Theater 3000 managed to retain despite moving to The Comedy Channel and, later, Sci-Fi Channel. Be sure to read Joel Hodgson's "5 Burning Questions About #BringBackMST3K" on the Kickstarter page. He eases most of the doubts any fan might have.
As usual, you can catch up on your MST3K viewing on Netflix as well as ShoutFactoryTV, which, until a few moments ago, I didn't even know was a thing. And what a glorious thing it is.