I'm using the phrase "oriental rug" in the broadest sense of the term, including Persian rugs (made in Iran), kilims and other tribal varieties.
Oriental rugs are godsends for heavily trafficked areas; the rich colors and intricate patterns make them great at hiding stains.
Here, a kilim looks eclectically marvelous juxtaposed against modern dining chairs.
Light walls open up this small guest bedroom, while the rug grounds the space and sets the color palette.
Use two around the island in a kitchen...
... Or go for one runner in a galley.
Switch out a boring bath mat in favor of something with a little more weight and personality.
Notice how many of these rooms pair the rugs with bright white? It cools down the rugs' tones and make for a more modern aesthetic.
The brick wall picks up on the deep red tones of the rug. They complement each other well.
The colors in the rug's pattern are a great jumping off point for accessorizing a room.