I watched All The President's Men a month or two ago, and while it's a good movie for focusing on Woodward and Berenstein and the WaPo, it left me wanting for something that went deeper into the politics. I wound up watching The American Experience: The Presidents on Nixon, but it was more focused on the arc of his entire career. I really need to do another search for a good doc that does a real blow-by-blow of Watergate specifically.
Henry Kissinger's official biography by Walter Isaacson,
Kissinger, goes into great depth about Watergate. Kissinger was not involved and was unscathed by Watergate, as he'd go onto being a bigger political celebrity after the Watergate scandal than before, and he was out of the country during most of the tumultuous months.
You get a great sense for just how fucked up the Nixon white house was. When Trump took office earlier this year, I had finished the biography a few months early, and it seemed reminiscent. Not so much the idea that Trump could very well be a crook, but just that Trump seemed to foster a conspiratorial distrust of people closest to him, and that most in his cabinet seem dead set against each other with deep factions forming.