I put up my first Amazon EC2 instance today, and though the link will probably either be broken or open up someone else's instance by the time you click on it, this marks a huge milestone in computing, and I'm happy to be a part of it! And hey, look! John Young is doing it too!
The fact that this service is SOOO DIRT CHEAP means the doors are open to anyone who has any grand ideas. Server costs used to be a barrier, and now they simply aren't. Oh, and look! An article on how to get Hadoop running on EC2!