2 Websites

AllPosters.com
http://www.allposters.com/
While having very little contrast (largely it's just a white background with a red header) this site opened up it's catalog to the viewer's eye a bit faster with the menu on the left. While not as visually pleasing as it's focus is utility; I feel it accomplishes this job well.

BareWalls.com
http://www.barewalls.com/
The better of the two; this site contrasts it's menus and has a better appeal to the background design and header without losing any practical usability. The main page, instead of jumping right into products, links special products and links. The catalog menu is on the left side the same as allposters, but uses drop boxes for a cleaner look and feel.