My favorite new feature in Windows XP over Windows 2000 is the grouping of buttons on your task bar by application, and the way that it stacks up like buttons and turns them into the menu when your task bar fills up instead of just making a long row of ever-smaller buttons. Frankly, I was shocked that Microsoft would come up with an idea so useful and so simple. The other day, I read somewhere that the BeOS grouped buttons in its task bar (which had a different name, of course, perhaps the Fetcher) in exactly this way. Knowing that Microsoft hadn’t come up with this feature quickly restored the world to its proper state, and I feel much better.