My company drafted me to participate in some Great Plains / SQL Server tuning training. It's been mostly dreadful (taking one for the team), but the SQL Server stuff is sometimes interesting.
For example, the material just reviewed how setting SQL Server's Min and Max memory equal to each other is not a good thing. To quote the presentation, “If you set them equal, you've just set SQL Server back about 4 years -- practically into SQL Server 6.5 mode.”
While this wasn't news to me, I appreciated the comedic tone of the training -- learning through laughter can be a powerful device!