I can't quit iMovie and i am stuck on full screen mode and when i try to shut down or restart my computer it won't let me because it says i need to quit iMovie which i am unable to do. What should I do?

To force quit an application, choose Force Quit from the Apple menu (or press Command-Option-Esc), then choose the unresponsive application in the Force Quit window, and click Force Quit.

Optionally, you may be able to Option-right click the application's icon in the Dock and choose Force Quit from the contextual menu.

If this is not an option, hold down the power button (5-10 seconds) until the mac shuts off and then restart.

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