Rhino has released the MST3K boxsets, all of which are excellent. They've also released Transformers and G.I. Joe to mixed reviews. I have The Monkees season one and it was absolutely incredible. I remember hearing from some purchasers of the Laugh-In boxsets that they are very well done. So...
Randy Salas reported quite a bit ago (from his notes taken during the TV on DVD Conference) that this was coming from Rhino. He also reported on H.R. Pufnstuf, which has already been released. This is, of course, the original Sid & Marty Kroft series from the '70s. I don't think it lasted...