Martial Power Art Gallery
Martial Power Wallpapers
There are some really nice artwork from Martial Power and are probably useful as illustrations for your martial PCs (and NPCs). However, for some reason, they don't appear to load when I visited the webpage and an error appears when I click on them individually.
If you are feeling like a fanboy and want to have one of the illustrations saying that you play D&D, you could use the wallpapers instead which has the D&D logo placed at the bottom of it. The wallpapers come in various sizes so it should be able to fit into any monitor.
Again, subscribers will be able to download a collected file of the art gallery but there is no additional feature for the wallpaper.