Noir redesigns of superheroes are a dime a dozen. Marvel even had a whole line of noir comics once, seeing what Spider-Man and company would be like if they were dealing with gumshoes and femme fatales instead of scary creeps and super villains. There's something about Henrik Sahlstroms Batman Noir redesigns, however. His Dark Knight has red goggles reminiscent of Hellboy character Lobster Johnson, and the rest of the batch include a fedora-wearing Joker and gangster moll Catwoman.
Tom Baker is the Comics Editor at WhatCulture! He's heard all the Doctor Who jokes, but not many about Randall and Hopkirk. He also blogs at http://communibearsilostate.wordpress.com/