Powershell
Good standard list of commands that most sysadmins SHOULD know. Heck, the majority of vanilla techs should know these as well. What I would really like to see is a "10 Things" list, as well as explanations and uses of Windows Powershell for systems administration.
Forgive me, (and enlighten me on its location... ;-P ) if there is already such an article in existence.