This week on “Picture Perfect,” things get pretty steamy, though not in the way you might think. We’ll have an hour of scores from films exemplifying the science fiction subgenre known as “steampunk.”

Generally speaking, steampunk employs forward-looking technologies and gadgetry – in many cases literally powered by steam – in incongruous, quasi-Victorian settings.

We’ll hear selections from Martin Scorsese’s “Hugo” (2011), with its abundant gears, steam, and free-writing automaton, with music by Howard Shore; “The Golden Compass” (2007), with its carriages, old-fashioned air ships and vintage arctic gear, with music by Alexandre Desplat; “Wild Wild West” (1999), with its cowboys, proto-James Bond gadgetry and Gustave Eiffel-style iron spider, with music by Elmer Bernstein; and “Time After Time” (1979), with one of the genre’s spiritual fathers, H.G.Wells, as an actual character, who pursues Jack the Ripper to the present day via a time machine of his creation, with music by Miklós Rózsa.

That’s movies powered by steampunk this week, on “Picture Perfect,” this Friday evening at 6, with a repeat Saturday morning at 6, or listen to it later as a webcast, at http://www.wwfm.org.

PHOTO: Battling a giant iron spider from a flying bicycle? It must be steampunk!