I don't know about you but I have my own hard earned bag of tricks and scripts that I have developed over the years.  Each new SQL Server that I inherit gets these stored procedures, jobs, scripts put on them without fail.  However, I have always wondered what Microsoft does for their SQL Servers...what scripts?, what jobs?, how often?...and the like.  Well, I came across this the other day and my questions had been answered. 

Microsoft AITScripts.zip  (downloads a zip file from from the MS download site)

The scripts in here are from Microsoft and give you a glimpse into what they do on their own DB servers for transaction logs, backups, error log cycling, index defragmentation, and so on. 

As always, I would recommned looking through the code throughly, installing them on a test server first and playing with them there as I can't be responsible for their content and I am sure MS would say the same.   

For me I was suprised to see how similar things were.  We had a lot of the same jobs/tasks but for me it was more interesting to see their code and how they do things. 

Enjoy!