For me it was probably the KISS Megos because I had wanted them since I was a kid. I remember seeing them in the store and my father wouldn't get them. I had wanted them ever since. When I first heard about ebay, the KISS Megos were the first thing I looked up. At the time, I didn't know a thing about "Mego" and in looking up the KISS series, I found that the same company made all of the Superheroes and Star Trek figures I'd had as a kid. So in addition to being my "Holy Grail" of toys, the KISS figures also led me back to Mego toys! I did eventually Collect 'em All!
Nostalgia just ainít what it used to be.