| > 1. First time Peter and Norman reveal each other's identities. It's the one where he gets amnesia at the end.|
ASM 38-39, I think. I definitely agree. I have these two issues as part of an odd collection from the early 90s titled "The Very Best of Marvel Comics." Unlike a good deal of the material therein, it really deserves the title.
| > 2. Death of Gwen Stacy. No explanation needed, is there?|
Nope, also a classic.
| > 7. Osborn Journal/Revelations. Great story to read on Halloween.|
Yeah, I have to admit this was the first thing that came to mind, for me. In part, I'm sure I feel closer to the story because I was 18 years old at the time, whereas the above two stories were way too early for me. But something about "Revelations" works well.
I think the Halloween backdrop really complements the theme of the goblin as this diabolical revenant, risen from the grave and consumed by hate and anger. JR JR helped a lot, certainly.