Dark Lady, I actually love PT 1970. It is the last storyline with a plot that has a coherent development, and a finale that draws together all the loose threads in a satisfactory conclusion. Granted there are speed bumps--notably Aunt Hannah's abrupt disappearance once Hoffman comes back (she was evidently viewed as a surrogate for Hoffman, as Alexalique's co-conspirator), and the whole Claude North thing (I wonder if Brian Sturdivant just failed to show up for work one day--that's what happened with Craig Slocum). I also enjoy getting to see Edmonds, Bennett, Thayer and others play such way-out characters. John Karlen played an alcoholic writer, but Will H. Loomis was still more with-it than his previous characterizations--though I will always love Willie best of all his roles. The Jekyll/Hyde plot isn't all that interesting to me, but every storyline has something that I feel the urge to fast forward through (in 1795, it's the Vicki/Peter stuff and Vicki's endless trial scenes).
The final weeks of Leviathan are memorable for that awful "Shadow" "special" effect. Ah well.
as you know I'm also a great fan of 1970PT. it's planned brevity made for a nice, tight, concise little moment. it was visually very appealing and had it's own unique atmosphere. as I recall they even employed a different set of musical cues to heighten the effect of being in a "different" universe.
for me it was the last truly original storyline (if "original" is a word that can really be applied to heavily cribbed material) before the whole thing started to devolve into retreads. except for the brief jaunt to 1995 it was the last storyline/time period I was actually engaged in.