So, how many of these costumes do you remember wearing? I remember Jeff and I were Batman and Superman (respectively) for years, and then went almost straight into the Star Wars costumes pictured on the site. Eventually I "rolled my own" Vader costume. I kept the mask but ditched the lame vinyl costume that came with it, substituting a clever combination of trash bags, construction paper, boxes, and a really tacky 70s fake gold chain raided from my mom's closet.
Later on I would simply sit in a lawnchair with a light blue sheet over me, handing out candy. I could barely see (mom wouldn't let me cut eyeholes in a good sheet). It amazed me how terrified kids were of this very simple costume. It was funny though... the little kids, 3-5 years old, didn't care a bit, just walked right up. It was the 6-10 year olds who would run screaming.