(4) What happened to Sam Seaborn on the West Wing?
So "plaguing" is a strong word. To put these queries to rest, here are my responses:
(1) The time and effort required to get a full answer to this question far exceeds my actual interest. As such, I'm letting this one go.
(2) It turns out they're not trolleys, they're the Muni F-line, otherwise known as "historic streetcars." They run up and down Market Street from the Castro to the Embarcadero (technically stops at Steuart), and along the Embarcadero from Market (Ferry Building) to Jones (Fisherman's Wharf). Since it is the Muni F-line, fares are normal Muni fares, and Muni Fastpasses, passports and transfers are accepted.
(3) Don't know yet, but apparently I have an uncle that owns some acreage out there that I should talk to if I'm interested.
(4) Who knows?!? He falls off the face of the Earth! At least that's what it seems like after it is heavily implied he will lose the California 47th Congressional race. But according to Wikipedia, and my glimpses at the last few episodes of West Wing's final season, it appears he does lose the California 47th Congressional race, but remains out in California, declining the White House promotion and returning to law firm life, only to return for the last couple of episodes to serve as Deputy to Josh Lyman, who is the White House Chief of Staff for the new President.
Now I can go back to sleep.