Now, I'm not the world's biggest fan of steampunk; I like a good steampunk tale as much as anybody, but I don't love it more than other stuff. But steampunk is cool and fun, and Castle made it look...cool and fun, right down to Castle's pitch-perfect definition of steampunk to Detective Beckett:
[Steampunk is] a subculture that embraces the simplicity and romance of the past and at the same time couples it with the hope and promise and sheer supercoolness of futuristic design.
How perfect is that! I can't help but wonder how, say, the CSI shows would depict such a steampunk club. They'd no doubt make it a creepy, eerie, nasty thing that only people with horrible social skills could embrace. Kind of like how they depicted furries and "sploshers" and midget conventions and lots of other stuff.
Kudos to Castle! Best show on teevee.