Steampunk is the name for this awe, and according to Gary Moskowitz ("What's with Steampunk?" in More Intelligent Life) it has gone mainstream. Some of Moskowitz's commenters believe it's become so mainstream that it isn't even worth an article about it!
is a sub-genre of science fiction and speculative fiction, that came into prominence during the 1980s and early 1990s. The term denotes fictional works set in an era or world where steam power is still widely used — usually the 19th century, and often Victorian era Britain — but with prominent elements of either science fiction or fantasy, often featuring futuristic technology as the people of this historical period would have envisioned it to look like, i.e. based on a Victorian perspective on fashion, culture, architectural style, art, etc. This technology may include fictional machines like those found in the works of H. G. Wells and Jules Verne, or real technological developments like the computer, but occurring at an earlier date. (Wikipedia.)I used to be quite fascinated with Jules Verne's stories when I was younger, but somehow managed to miss this, now almost passe, subculture, with its anthologies of fiction, magazines, comics, websites, workshops, and seminars!
Those Magnificent Men in Their Flying Machines isn't steampunk, but sort of heads there, and I love the song.
(photo credit - steampunk scooter control panel)