Steampunk lightsaber
Steampunk Storm Trooper
Steampunk Lego TIE Fighter
Wired Magazine article on Star Wars/steampunk art
Steampunk Star Wars Rebellion Recruiting Posters
Steampunk Imperial Walker
Steam Wars Lego contest
Steampunk Star Wars examples at a graphic design forum (amazing!)
(From a productivity standpoint, Gizmodo was probably not a good site for me to discover.)
And then there's Steam Trek....