Cowboy Bebop--only steampunk
Full Metal Alchemist--only more steampunk
Psychological, metaphysical horror--elements of steampunk optional
High-fantasy meets technology (there's probably an element of steampunk, here--think Space 1889 in 1912)
High-fantasy meets post-apocalyptic (terminator vs. full metal alchemist--maybe not so steampunk)
Diamond Age (or: A Young Lady's Illustrated Primer)--steampunk with nanotech!

My main ideas involve economic depression and high-technology relative to the perceived era. It could be 2112, and the world's financial markets have finally collapsed, making mercantilism once again viable. The oil has dried up, and sea levels have risen, making more deep-water ports available.

Suddenly, nuclear steamers are the most reliable form of trans-continental passage, but they still take days of travel--call it 5 from Europe to the US East coast (Florida is nice this time of year). Intercontinental transit is by electrical trains or airships (bullet trains are too expensive, and the agriculturalists are too strong a lobby after the dustings of 2080-2091). Traveling "green" has never been easier, with fuel-cell and electrical automobiles--nevermind that they can only get about 300 miles (yes, we're still using imperial units--what a bizarre people we are) before running out of power and the need to stop for a day to recharge.

That means you can get from Seattle to Chicago in about 4 days, and Seattle to LA in about 6--if you're driving. The repercussions would be lessened road traffic outside an 80 mile radius, the urbanization of suburbs, as well as improvements in public transportation, broadband communications, and locally-produced foodstuffs (the dustings of 2080-2091 were a big call to organic and sustainable food production).

Sure, there had to be some revisions of national policy. The Childbearing act of 2089 is still in force, even though it's 23 years out-of-date, and it's no longer necessary to "bring to justice" those families that can support more than two children. Plus, the malefication of 2091 (when many folks only wanted male children) is a worry for natural replication since simuterus production is still rather dodgy, and interuterine transplants are still on the dodgy side.

But sure, the Mars & Lunar colonies are doing well. Fresh produce from the Mars trans-liners is arriving regularly, now, and the Lunar revolt is almost quelled. The solar mirrors have achieved 4° C increase in mean temperature (from 2° last year) on the Martian surface, and the lawns are adding to total oxygen levels every day. In another 10 years, Martian colonists will be able to walk on the surface for at least an hour without protective equpment. The Canopy project is managing nicely, as well, so long as funding continues for the annual pollinations.

So yeah, this is where I'm at, creatively, as far as games are concerned. I think it'd be an interesting campaign, so long as one doesn't look at the science too roughly. And yeah, I'm a big steampunk freak. Bioplastic, advanced medical technologies, broadband communications--all with low-cost energies, but raw materials are inhibited resulting in a return to mercantile trading. The high-tech stuff comes from the moon, food comes from Mars, and people on this planet live at the sufferance of those two places in a tenuous power play.

Maybe I'll flesh it out a bit more, even if I can't actually run it.