Old Red Jalopy is a design company in the United Kingdom that puts together custom posters.
Found these posters that they did based on the big lightsaber duels from the Star Wars films, but designed to be like old boxing promotional artwork. I think the art looks fantastic. I would love to be able to buy one of these, if they were available for sale. Unfortunately I don't think these posters are Lucasfilm approved.
You can see more of their artwork that isn't up for sale on their deviantART site.