How about Blackhawk? There are a ton of possible images to choose from, but often with the opposite problem from the video game examples: sometimes they look like they might just be cloth.
This one
◊ suggests "leather" pretty effectively, and you don't get much more badass than standing atop a flaming swastika with twin .45s.
That particular picture of Wesker isn't the best example, which is why I suggest alternatives.
Here's Wesker's character from Marvel Vs Capcom 3 and his alternate colors. [1]
◊
Going through the examples list, it suggests Xena. So, we have Xena
◊ and Callisto
◊.
And while searching for Callisto, I came across Callisto
◊ from the X-men. Which also suggests Wolverine
◊ and apparently the entire cast of the movies
◊.
Finally where I can GIS. How's this
◊?
EDIT:
Of all of those, I like the Xena pic the best.
edited 3rd Feb '11 7:42:12 PM by Willbyr
Crown Description:
Nominations for replacement images:

Sure he's clearly wearing a dark Badass Longcoat, but it's not obvious it's leather.
Also, I don't think something from a video game on the Xbox 360 or Playstation 3 (or even a few Wii games like Super Mario Galaxy) would be best anyway, since those lighting engines tend to make everything look glossy, even things that tend to "eat light" in real life.
I'm on the internet. My arguments are invalid.