While browsing my various cosplay sites, I came across this picture that was obviously generating some buzz. I present Benedict Cumberbatch cosplaying as Spike Spiegel from Cowboy Bebop. I have to say he does look like Spike.
Update: I have been informed that this apparently was photoshopped (which I am not surprised). Regardless, very convincing photoshop, and I still like it.
Here are more pictures, enjoy: