I search for these very often, so I will collect them all here in one place.

Office 2013:
http://technet.microsoft.com/en-us/library/dn385360.aspx

Office 2010, Windows Vista, Windows 7, Windows 2008, Windows 2008 R3:
http://technet.microsoft.com/en-us/library/ff793421.aspx

Windows 2012, Windows 8, Windows 2012 R2, Windows 8.1:
http://technet.microsoft.com/en-us/library/jj612867.aspx

And a few more interesting links:

Office 2010:
http://4sysops.com/archives/office-2010-kms-activation-essentials/

A full list of license keys:
http://www.bonusbits.com/main/Reference:KMS_Client_Keys

And one more manual with an interesting hostname on the last page:
http://www.uc.edu/content/dam/uc/ucit/docs/helpdesk/Microsoft_Office_KMS_Activation.pdf