Looks like all seasons 1-6. Tested a few episodes. Works fine on Chrome. Problems with ad blocker browsers. Commercials hopefully limited. Click on TRC logo on top for menu. Some series partial. Looks like all TDVDS, Rockford Files, Midsomer Murders, others. I'm getting bombarded with commercials on IMBD TV Midsomer Murders. Hopefully this is better. Everyone enjoy!!!!

https://therokuchannel.roku.com/details/66cc50e20b9850979362bca326ee4630/leave-it-to-beaver

There's also an app. Create an account for the free stuff, or you could watch as a guest.

Also has a couple seasons of "Hazel" and "The Flying Nun" which I haven't seen on pay or limited commercials sites.