Since the question was about Halloween candy, I will stick to that.
Candy corn and the Brach's candy pumpkins are my favorites. Someone mentioned that candy corn is only available at Halloween--they have it year-round here, but I think Brach's (the best) is only available in the fall. (Brach's also made the best chocolate covered cherries, but they stopped making them a few years ago. My whole family is devastated over that terrible turn of events, as Santa always gave us Brach's chocolate cherries for Christmas!).