I've always wanted to play Fiasco, haven't had the chance.  Lady Blackbird is quite awesome, I've considered trying to adapt it for modern(ish) spy stuff, sort of U.N.C.L.E. type.  There's a really cool game that sadly the publisher shut down recently, the game is called Fortune's Fool.  It's Renaissance Europe with the standard fantasy races integrated into the Renaissance, but the twist on this particular game system is that it's diceless: it uses a single Tarot deck to resolve all randomization challenges and the GM never draws a card.  It's pretty cool. I'm not a steampunk fan either, I played more traditional archetypes though somewhat twisted: a trapper who was deadly with knives and rifles but lousy with pistols was one, but my fave was my French school ma'am who was an amazing gun fighter.