I have Season 3 of Green Acres on DVD and I loved watching the series again - I hadn't seen it for 17 years! I live in the UK and it was re-run on Satellite TV but after 1992 it was never shown again. I am disappointed that Seasons 4, 5 and 6 haven't been released, will they eventually come out? There are so many classic episodes in those seasons, including the one where Lisa starts her "cosmetetics" business and Mr Haney jumps on the bandwagon withhis own business called "Haney's Cosmetetics" - a great example of Green Acres' humour.
I must admit, although the first two season were still really funny and entertaining, I seem to recall that they lacked the surreal humour of the later seasons. I was also never keen on the Petticoat Junction crossovers in the early episodes, either.