There is only ONE….

I’ve been thinking of “there is only one” type things.  We all know there is more than one way to skin a cat… but what is there only one of?

• There is only one phone on the market that if they released a new version tomorrow, there would be people standing in line ALL NIGHT waiting to buy it … even if it was just a little faster than the one in their pocket.
• There is only ONE website that people love or hate so much that when they leave it, they feel compelled to discuss leaving it…
• There is only ONE Slim Shady

What else?