Perfect Trilogies

It's used to be a common thing to hear, "the sequel is never as good as the original". These days that isn't necessarily true. Many films have sequels just as good if not better than the original. Trilogies are another story though. What seems to be the most common is for there to be two great installments with a lacking third entry. But there are examples where all three films have been wonderful. Join the panel as they talk Perfect Trilogies.