Shorcuts
<WINDOWS KEY> + E = Open Windows Explorer
<WINDOWS KEY> + R = Opens "Run" Dialog
<WINDOWS KEY> + D = Minimized all windows (and restores them)
Run Commands
dsa.msc = Opens Active Directory Users and Computers
\\computername = Opens Windows Explorer and shows all viewable shares on a computer on your network
control netconnections = Opens your Network Connections
control = opens your control panel
Those are just a few I find useful! What do you run from the command line?
Enjoy!