When mirroring - can I turn off the monitor on my Mac...?

I just set up my MacBook Pro with my AppleTV and everything is working nicely. However, It would be even better if I could get my computer monitor to turn off while I'm viewing on my TV.
Is this possible?

Actually, the answer is YES!
Thought it best to post here again because I discovered that while Mirroring, turning off the monitor on my MacBook Pro is possible (despite a few replies here that it cannot be done). Its super easy to do, just dim the monitor until it goes completely dark, and continue to use your computer as it is displayed on the TV. The trick is not to close the monitor down, that will put the computer to sleep.
While I was hoping I could also achieve the same result while my MacBook is connected to my Cinema display, it seems the dimming capability on the Cinema display is limited to getting very dim, but not turning off completely.
I'll keep researching this some more and if I have any more updates I will post back to share -- hopefully there are other users who will find this info helpful.
For now, I will be using my TV as my primary display while my MacBook Pro's monitor is turned off.

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