As well as the independent SQL communities, there is also a Microsoft run one, the Microsoft SQL Server Community Worldwide ( You can tell it’s the Microsoft one by the catchy title). They do tend to assume worldwide is the United States wide or even the Seattle area so you can drop in to Redmond for SQL school. However don’t let that put you off, there is some really good stuff there including a list of utility scripts here as long as your arm for probing the dark corners of your installations:
One thing, the download button is hidden away when you want to get one of these scripts…
Andrew has posted a great list of community developed utilities for SQL Server .  There is a few