Forget just regular OLED, Samsung has SUPER AMOLED to show you.
When Samsung showed off its Super AMOLED-phone last month, we were intrigued at what made it a special phone for the South Korean company. The specs were impressive, but the unique feature of a "super" AMOLED is what made it stand out.
Samsung had just released a promotional video that expressed why Super AMOLED is better than the TFT technology that's used in the iPhone or the regular AMOLED in the Google/HTC Nexus One.
Samsung Super AMOLED
Perhaps even more impressive is that Samsung's Super AMOLED is viewable in sunlight – something that current OLED phones can't boast.

I've seen videos of AMOLED displays performing in full sunlight with very few problems. Of course, it isn't as bright as it would be indoors, but it's definitely usable and far better then any other display tech I've seen. As far as I can tell this is as close to 'the perfect display' that we have right now, though OLED technology has to come down drastically in price before we'll start seeing it in desktop/notebook display and televisions.