
...is like a red, red, rose? Or perhaps it's more like an aquamarine rose that only exists in an alternate universe.
Fringe is a tough show to write about. Yes, part of that is because of the mystery aspect of the show, and my reticence to not give anything away to those who may not have discovered its greatness yet. But it's also because, the way the show is structured, events don't unfold the way they did with, say, Lost. And as the show has matured (and improved), the structure itself has changed.
Fringe started off a little weak. Most of the first season is basically just a paranormal crime procedural, with each episode centering around a different "fringe" event that may or may not have anything to do with the larger story of the season. I know it lost some people around the middle there, but the end of season 1 is definitely worth watching, if only to see the superb Jared Harris (Lane Pryce on Mad Men) being superbly creepy. So, if you're new to Fringe and don't feel like slogging through some of the weaker episodes, my advice is this: watch the first two and the last two episodes of the season. That's all you really need. I do think any show is better if you watch all of it, but here, it's not completely necessary.
The second season of Fringe took the awesomeness of the end of season 1 and ran with it. The strength of the show really lies with the characters at the heart of it and the myriad relationships between Olivia, Peter, and Walter. Given material with more depth and an expectation of growth, Anna Torv, Joshua Jackson, and John Noble consistently deliver performances that are strong, endearing, realistic, and often funny. Humor was another concept that season 2 embraced whole-heartedly, going as far as naming an episode "Brown Betty" after a particularly potent strain of Walter's marijuana. I really love the embracing of weed and hallucinogenics as part of the mythology of Fringe; it's awesome to be able to say, "We're going to pump this character - and ourselves - full of acid and then take a journey through her brain", and have that be a normal day on Fringe.