Howl's Moving Castle has some decidedly steampunky bits.
League of Extraordinary Gentlemen... I wish I liked it better, but there were too many errors to ignore. (Like basic geography, and even basic knowledge of the characters... I honestly don't think that the screenwriter bothered reading any of the books that the comic was based on.) But the Nautilus was cool, and Nemo is terrific!
Bram Stoker's Dracula has a good feel for a Steampunk era London, though the costuming is... a bit off.
Young Sherlock Holmes.
The Auld Grump