As Lost prepares to finish its historic run tonight on ABC at 9:00 PM eastern and pacific time, we here at Spinoff Online are understandably mournful over the passing of one of our favorite shows. But even when Lost leaves the airwaves for good, there will be plenty of material to look back upon with fondness — and, yes, some frustration as well.

Check out some of the elements of Lost that Spinoff Online writers Graeme McMillan, Kevin Melrose and Josh Wigler will miss the most, and some of the elements they'll miss the least.

Favorite Characters: Hugo "Hurley" Reyes, the Conscience

Kevin Melrose: There's so much to like about Hurley -- everybody loves Hugo -- the mental patient turned cursed millionaire turned medium. Self-conscious, child-like, kind and plagued by doubt, he's played many roles over the cource of six seasons: Often the source of comic relief, he's the target of some of Sawyer's best nicknames (International House of Pancakes, Avalanche, Jumbotron, etc.). Thanks to his ability to talk to the dead, Hurley's a plot shortcut, convincing himself and others to take action based on the say-so of ghosts (notably Jacob). And, perhaps most helpfully, he's served as the voice of the audience, frequently expressing its questions and frustrations. But if the Sun-Jin relationship was the emotional heart of Lost -- and it was -- Hugo Reyes is its moral core. He is Sawyer's super-sized Jiminy Cricket, teary-eyed, self-absorbed Jack's better angel and, time and again, an unlikely hero willing to risk his own life and happiness to prevent his friends from taking the wrong path.

Least Favorite Characters: Miles Straume, the Ghost Whisperer

Josh Wigler: It's not that I particularly hate Miles, the sarcastic ghost-whisperer always looking out for number one; it's just that I feel he's wasteful. Everything Miles can do, someone else can do better. Cases in point: Miles can hear the thoughts of dead people. Well, Hurley can do that, too, and he can hold actual conversations with them. Point, Hurley. Miles can dish out plenty of cutting insults, right? He certainly doesn't roll out the one-liners better than Sawyer. As far as looking out for numero uno, Miles — heck, nobody — beats Benjamin Linus. It's frustrating to me that Miles gets to make it to the end over every other freighter character, especially Faraday. Unless he has an interesting role to play in the finale, I'll always think that Miles was the show's biggest waste of a character.

Favorite Characters: Benjamin Linus, the Deceiver

Kevin Melrose: Hurley's polar opposite, Ben is Lost's most fascinating and, frustrating, character. An expert liar fueled by self-preservation and revenge, he's calculating and dangerous, even when seemingly broken or cowed (perhaps especially when). A cold-blooded killer and admitted mass murderer who, as leader of the Others, was responsible for the harassment, kidnappings and deaths of Flight 815 survivors, Ben is still able to manipulate his one-time victims to help him achieve his goals: Sayid became his personal assassin, and Jack his Pied Piper, leading the rest of the Oceanic Six back to the Island. For all his deceit and apparent lack of emotion, however, Ben is capable of love -- for Juliet, for his adopted daughter Alex and, above all else, for the Island. It's to protect the Island that he sacrificed Alex and expelled himself by turning the wheel below the Orchid station, triggering the time shift. Yet it's his feelings of betrayal from being rejected by the Island that leaves Ben vulnerable, and easily manipulated by the Man in Black (as the resurrected John Locke) into killing Jacob and once more turning on the Flight 815 survivors to get what he most wants. "Ben, you never cease to amaze me," Locke said in the penultimate episode. Indeed.

Favorite Episodes: "The Constant"

Graeme McMillan: I'm a sucker for a good love story, and "The Constant" was definitely that, telling the story of Desmond and Penny. But it was also a great time-travel episode, and one that seemed to fill in a lot of the show's mythology, as well - Not to mention an episode that featured large roles for the two characters I probably enjoyed most in the entire series that weren't called Ben Linus, Desmond and Daniel (Oh, Daniel. Why'd you have to die?). Somewhat overwhelming with new information and yet giving the impression that it'd also somehow revealed a piece of the final puzzle if only you could work it out, I'm not sure that Lost ever got better than "The Constant."

Least Favorite Episodes: "Across The Sea"

Graeme McMillan: In contrast, "Across The Sea" was an episode that claimed to reveal the answers to long-asked questions, but instead just replaced them with other questions: Who was the woman who adopted Jacob and his unnamed brother? How did she come to be on the Island? Why couldn't someone dub in her latin dialogue so that it didn't sound so unconvincing? What was the light in the cave? How did the shipwrecked crew come up with the plan to use the wheel to somehow manipulate the light so that they could leave? Why is Jacob so naive and trusting that he comes across as kind of stupid? And so on, and so on. The actors were great — well, aside from Allison Janey's Latin — but the writing was vague and mysterious at a time when clarity and confirmation was what I really wanted.

Greatest Victory: Launching The Raft ("Exodus")

Josh Wigler Although the voyage of Michael, Walt, Jin and Sawyer ultimately amounted to very little in the way of progress, the launching of the raft at the end of "Exodus" stands out to me as the greatest win for the survivors of Oceanic Flight 815. The very act of getting the raft in the water signified the first legitimate possibility of escaping from the Island since crashing there in the first place. Would they find rescue? Would they die out there on the ocean? Either option was a possibility, but just watching these heroes sail off towards possible rescue was not only an amazingly cathartic moment for the castaways, but also for viewers, thanks to terrific performances and the beautiful score from composer Michael Giacchino.

Head to the comments section and share your favorite memories from Lost before tonight's series finale.