Ace tipped me off to the new Sherlock Holmes movie (coming out in December): he’s got some thoughts about this one that you should check out. And before you start worrying, apparently Guy Ritchie (director) and Jude Law (Watson) are both Holmesians, while Robert Downey (Holmes) is… Robert Downey. So, there’s already a couple of good signs that it won’t suck.
But to segue, while looking up the answer to a question that my lovely wife asked (“Was Sherlock Holmes was the physical confrontation type?”) I came across bartitsu.org, a site dedicated to the… well, there’s some controversy whether bartitsu is a ‘real’ Victorian martial art, and not helped by the fact that Doyle called it ‘baritsu.’ Still, people seemed determined to reproduce it now; they have books out (Bartitsu Compendium, Volume 1: History and the Canonical Syllabus) and the aforementioned website.
And this article on the umbrella as a combat weapon is quite good, although I shall politely not address its claim to be an authentic journal article from the Victorian era.
[UPDATE] I have been informed in comments that the article is quite real. I stand abashed.