SQL Server Build Numbers Reference

I always have a hard time finding these pages when I need them most so I thought I'd link them up.  You may also consider sqlserverbuilds.blogspot.com for a really nice unofficial build chart.  I wish Microsoft would maintain them in a similar (consolidated) format.

Update: after I originally posted this article, my friend Greg over at CodeTempest showed me his favorite, which may my own new favorite as well.  It looks better organized and more likely to be maintained.  

Official Microsoft Reference Pages

Build Numbers for SQL Server 2008 R2 (Pre-SP1)

http://support.microsoft.com/kb/981356

Build Numbers for SQL Server 2008 SP1
http://support.microsoft.com/kb/970365

Build Numbers for SQL Server 2008 (Pre-SP1)
http://support.microsoft.com/kb/956909

Build Numbers for SQL Server 2005 SP3
http://support.microsoft.com/kb/960598

Build Numbers for SQL Server 2005 SP2
http://support.microsoft.com/kb/937137

I don't track anything older than this, because frankly, you should really consider upgrading.