I had always heard about it being a space western, but...wow. The first episode, they meet up with a sherrif or mayor or something on one of the worlds and her party is nearly all on horseback (except for the guy on the ATV). And they got old West-style guns too. The second episode, they rob a train. This is when they're not flying around in a spaceship, and using tools and weapons that look pretty contemporary. But yet, it actually works.
The look of the series is interesting. There's a lot of
used future going on with the Serenity as a whole, but the infirmary looks nice and clean and shiny, the bunks aren't really grungy, and the mess has kind of a homey look to it. It's somewhat unusual to see a single spaceship actually mix styles like this, since most of the time they're either all
squeaky clean and shiny or used future, but this also works, it feels more real. The overall universe has the same look, there are really futuristic planets alongside stuff that looks like it came out of the old West and more exotic stuff that looks Chinese or maybe central Asian or Indian or something. Same thing with the people, lots of varied wardrobes. It looks good, gives the show a good deal of depth, or at least a great illusion of one.