1. Lost
Why You Should Watch It: Lost is probably the most talked about show of the last decade. It is at heart, a drama, but it is its touches of other genres (primarily sci-fi) that made it into something truly worth watching. The big budget Pilot episode is one of the best introductions to a show ever, and right from the get go, it was obvious just how massive the show's potential was. And for the majority of it's run, it lived up to it. An excellently cast, gorgeous-looking show that has since inspired a couple handful of copycats, who all couldn't help but llook inferior next to J.J Abrams' juggernaut.
Why You Should Watch It Again: Without a doubt, Lost is one of the deepest shows in terms of storytelling and literary techniques. Love it or hate it, it's impossible to deny just how much there is going on in the show at all times. The amount of cultural references, recurring themes, allusions, and juxtapositions is just overwhelming. Even just the amount of core characters or number of episodes is quite staggering. From an analytical point of view, there's so much that can be studied in Lost. And so, anyone taking notes better watch the show more than once, or you'll miss a hell of a lot. With regard to mythology, it's hard to think of another show that crafted it's own world in such vast detail. Be it the DHARMA initiative, the Others, the flashbacks, flashfowards, flash-sidewards, time travel or just the psychical island itself, there was always so bloody much to keep on top of. If you don't believe me, just google Lostpedia and see for yourself just how deep the mythology runs. There were always things to speculate and theorize about, and when things are finally revealed, it's great to go back and watch episodes again, knowing now what you know. Suddenly you have a whole new perspective on the show, and things that didn't make sense before are, finally (Thank the Lord!) making sense now. It's a ridiculously satisfying experience and the more you rewatch it, the more you slowly piece things together again. And sure, maybe in the very end, not every single thing came as full circle as we all would've hoped, but the show still did a remarkably good job of tying a lot of loose ends together. At the end of day, Lost was really a show about the characters, and after seeing the finale, I think this - along with the writers' main intentions - was made very clear. It's a show about people in extraordinary circumstances, about relationships, about past, present and future. And when you know this, you can go back and enjoy each and every excellently developed character's individual journeys. It's nice to return to season one and see just how much of a skeptic Jack was, compared to where he ends up by season 6. It's a wonderfully organic development, and is just one example of satisfying character journeys on the show. Shows like Lost are few and far between, and although watching the dozens of copycat shows it inspired can be good fun (mostly to ridicule), your time would probably be better spent rewatching this modern classic.