I've been a part of board threads where we talk about the most amazing run of albums, usually 4 or 5, but once everyone goes through Beatles, Stones, Bowie (who I think wins based on his 70s run), the Smiths and Radiohead, the conversation evolves into a lot of bickering.
However, what popped into my head when I saw this thread title was Meat Puppets II / Up on the Sun, followed by Husker Du New Day Rising / Flip Your Wig (Zen doesn't do it for me as much as those two).