I am a chronic lurker here, but I will weigh in on this one. My story is similar to many of the folks here. I am 34 and had (still have, in storage!) a pretty decent collection of the orginal Kenner 3 3/4" figures. I can remember the anticipation and excitement of going to the store and picking out a new figure, after studying the tiny pictures on the card backs for hours on end.
SW was my first real exposure to action figures as a kid, and although I went on to become quite an extensive collector of many other lines of figures and toys (RAH GI Joe, Transformers Gobots, Black Hole, Marvel and DC superheroes, Mego, Visionaries and on and on...), eventually I lost interest in all of it except Star Wars, which I always came back to. In fact, my favorite of all my childhood Star Wars toys were the Kenner 12" figure line, so when Hasbro started to re-introduce them in the late 90's I started to get very interested again and picked several of them up. Then I moved into Dragon and bbi figures, and the accuracy/realism of the Hasbro SW figures started to seem very sub-par.
Then I discovered that Sideshow would be making 1:6 scale SW figures, and I dove in head first. I now concentrate my collecting on 1:1 SW props and the 1:6 Sideshow SW figures. Every time I receive an email notification that another SS figure is en route to my house, I have pangs of that anticipation and excitement that I had as a kid. I hope SS keeps making their 1:6 line for a long time--and I hope I can keep up with the funds required!