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They have something like this already, it's called a Flight Data Recorder

I can't wait to see the video footage from it!

I don't know if you are being sarcastic, and but I don't see any smiley faces so here http://en.m.wikipedia.org/wiki/Flight_data_recorder

Sarcasm that is made unambiguous is not sarcasm.

Do they record videos too ? I don't think so.

Modern planes have multiple video cameras attached to them, I'm not sure if they are recorded, though. They help with taxing.