This is a hard one, but I'm going to go with Lost. I always enjoyed the mysteries and cryptic clues and questions (some answered, most not) that each episode raised, but, ever since the series ended, what I have missed the most are the characters.
|Josh Holloway as Sawyer|
Lost, even when it was completely frustrating, was still the most interesting, intelligent, entertaining show, week after week (except for those long months when it wasn't on) during all of its six seasons.
You couldn't watch it and also do something else, like surf the 'net or read a magazine. You had to be in it. That's a rare thing for a network television show.
One day it will be fun to watch the entire series again and get totally lost a second time.
Lost was filmed in Hawaii. Here's a gif of George in Hawaii from The Descendants.