This is my favourite lens. It's awesome. You can't beat its sharpness - even wide open. Its bokeh beats everything You've seen before - it's so creamy: All the background is being transformed into a georgious something and You can isolate the object from the background quite efficiently. Just beautiful. You can even use it with extenders like the Kenko 1.4 or Nikon TC-20E II without significant influence on the image quality.
This beast kicks ass!