No matter what, a TV show finale is going to be divisive, but when the last episode is truly great, this is more satisfying than any other installment of the series. It's difficult when a TV show finale betrays viewers, leaving fans to ponder the characters' future forever. When done right, the last episode reestablishes the best parts of the series that kept viewers watching for many years. When done wrong, it disrupts the series' legacy, disappointing people who have been rooting for the show to succeed since the beginning.