I've been going through it again and it's basically like watching it new. I've forgotten about everything past the second season. So I got to do this twice.
I wonder what it was about the show that caused this neuralization effect. I could recite the whole mythology and characters chapter and verse the entire time it was on and now I barely remember who Sayid was. Yet I can still pretty vividly recall most of BUFFY, ANGEL, THE X-FILES and SOPRANOS, all of which I haven't seen as recently.