Oh, 'Warehouse13' is great fun and some of the gadgets are very definitely steampunk influenced. 'Firefly' is more western science fiction than steampunk, I feel, although is none the worse for that.
I enjoyed 'War of the Worlds', and liked the extra dimension they gave the story, but I'm afraid I've given up on 'His Dark Materials'; it just seems to drawn out for me, which is a pity as the books are fantastic.