If you look a bit further, I'm sure you'll see more. I see chairs, tables, a television, a remote control -- all with rounded corners. So many rounded rectangles, yet I never noticed before I read this article. It's funny how a story like this can change how you look at the world.
Somewhat ironically, the object with sharp edges that annoys me most is my 2G iPod Nano, which, similar to the 4G iPod Nano, has a sharp rim all around both ends. The 2G is basically an extruded rounded rectangle and the 4G is like an extruded oval, in the same way a cylinder is an extruded circle.
I bought the 3G nano, but very seldom use it because the scroll wheel is too small. I didn't buy the 4G precisely because it had the same sharp edge problem as the 2G.