"Lost" Spoilage...!
I, too, was mesmerized by the finale last night. I thought the "Jack story" (flashforward?) was disturbing...and it was painful to watch him destroying himself.
I, too, was confused by the reference to "call my father's office..." It seemed to validate that his father IS alive...so it appeared to be a flashBACK.
As Jennifer has reported, the final one of these scenes indicated it was a flashFORWARD because the scene between Jack and Kate -- and the reference to the "Golden Pass" (Oceanic, I presume) -- was totally in the future tense.
I agree about Charlie -- he could have escaped. In fact, even though he was in that flooded hatch, presumably drowning (but on this island, who can say what "death" is?), there was an open porthole that looked large enough for him (and his scrawny frame) to escape through in order for him to reach the surface. Thus, Desmond's vision would have been real, but Charlie would survive. And who knows....
I was really glad Hurley had his "moment". I thought the scene last week between him and Charlie was rather touching, especially given the bluntness of Charlie's reference to Hurley's size and its incompatibility with the canoe. Sawyer was rather ugly last night, too....it was great to see Hurley save the day.
I felt really torn about Sawyer killing that guy on the beach, especially since he had given up. This was the guy who defied Ben's orders and did NOT kill the three men on the beach. He was always portrayed as a "probable" good guy. There may be repercussions for Sawyer on that move.
Locke seeing Walt next to the pit was interesting. I think it may have been Jacob/the island using the image of Walt, and his previous closeness with Locke, as a means of communicating/saving Locke from his death (by suicide) in the pit rather than an actual manifestation by Walt as some protective overseer.