When I was in London this past May, I saw these great chairs in a restaurant. I knew they were by some design icon, but I had forgotten who had originally designed them.
Now I know--they're the Les Arc chairs by Charlotte Perriand, a contemporary/colleague of Le Corbusier. Of course the restaurant chairs were probably a reproduction. There are affordable copies in many places, and I've even seen denim versions at Big Daddy Antiques in San Francisco. As you can see, the real deal (vintage, no less) can be pricey:
I love the stool version and wish I could get a pair of counter stools. Sigh...someday!