You know that 100 Sun Rays connected to a Server with 100 other users desktops all running at the same time consumes WAY less power than 100 PCs.
You know that Server-based computing is not new, in fact it is easily 40+ years old - Sun Rays just keep making it better.
You know the Sun Rays MTBF is off-the-charts-silly by today's technological standards, because nothing lasts 22 years. And... can I prove to you that Sun Rays last 22 years? No, er... well statistically? Yes. Practically? No. They've only been around since 1999, but... I can point you at grade schools that have had them since 1999, and, really.... can you think of a more harsh environment for anything that goes on a desktop than a grade school? (Yes - we have Sun Rays in mines) What's the lifespan of a personal computer at a grade school? How about at your office?
So the whole argument of consuming less power and throwing electronics into land fill much less often is pretty powerful because while being good for the environment, they save you money, too.
But it doesn't stop there. How about Sun Ray 3s dropping from a whole 6 watts to less than 0.5 watts after 30 minutes of inactivity?
How about the packaging for the new Sun Rays being largely made up of 90% post-consumer waste, which you can then go and recycle, again?
How about the Sun Ray devices themselves being recyclable?
If this topic of extreme eco friendliness resonates with you, listed to the interview with Michael Dann below. Oracle really has taken this to a new level.