Two comments:

1) Thanks for writting the series. It is always nice to review information. Being reminded of something useful or learning something new is always a pleasant surprise. I think I was both reminded of something useful and learned something new in this series.

2) In the final segment, your comments for the following sections are identical:

-Consider Using a Foreign Key in the Search Key of the Clustered In

-Consider Having Included Columns in your Indexes