Although I've enjoyed all four episodes so far, I'm hoping it'll gear up a bit from now on. Having read all the books, I found Jeremy Poldark by far the least exciting. The next episode should have moved on to book four, Warleggan, in which a whole lot of stuff happens. No spoilers, obviously, but I just wonder whether the portrayals of Elizabeth and Caroline, which have been subject to quite a lot of criticism, might make more sense as the plot develops throughout the series. My biggest worry is that the writing is going to make Ross a bit too P.C., for fear of turning people off the character. For that reason, I thought the 'sleazy' scene with Elizabeth in episode three was good, if a bit rushed. He was certainly drunk, having been at Trenwith knocking it back for hours, and was probably reminded of a past, simpler time, when his father was alive, he and Elizabeth were together and he wasn't humiliated by debt.
At the BFI Premiere, Debbie Horsfield said that Series Three will only be covering one and a half books, so possibly that'll allow more time for plot/character development.
Minor carping aside, it's still great to watch, and a definite positive for gloomy Sunday evenings.