How do you restart a Windows computer over a Remote Desktop connection?

When I connect to my Windows 7 desktop computer via Remote Desktop (MSTSC.exe), the options under the Start Menu are "Log Off" (the default), "Lock", and "Disconnect". How do I restart (or shutdown)?

From superuser

• Open a command window(or Windows Key + R) and type:

  shutdown /r /t 0
  

  Kravlin : /r does a reboot /t sets the number of seconds. if you want to shutdown without rebooting and turn the computer off as well use an /s

  tonyr roth : be careful of /s somebody will need to be local to powerup the workstation!

  Andrew Lewis : Unless you have Wake-On-Lan functionality.

• Start button, then Windows Security. Click the little red shutdown icon, and you'll see the "Restart" option.

  You use the Windows Security option for XP and Vista also. The restart option is deliberately removed from the normal location to prevent accidents.