Just some bits and pieces that don’t really fit in anywhere else today:

Get your spreadsheet to talk to you at: Newton Excel Shakespeare
Download: http://www.interactiveds.com.au/software/Text2Speech.xlsb

Anniversaries gives you the tools to avoid missing significant anniversaries (and also to find the value of phi).
Download: http://interactiveds.com.au/software/Anniversaries.zip

Geometry for Joiners provides a spreadsheet solution to a geometric calculation that may or may not be very useful to joiners.
Download: http://www.interactiveds.com.au/software/FrameBrace.xlsb

Finally my annual statistics summary gives a list of all the posts here that other people have thought to be worth looking at:
http://interactiveds.com.au/software/Stats-year1.xls
http://interactiveds.com.au/software/Stats-year2.xls
http://interactiveds.com.au/software/Stats-year3.xls
http://interactiveds.com.au/software/Stats-year4.xls