Bless her 

I'm going to be a bit of a downer here, but I can't help but call BS. I have a nephew (great nephew, really) who was 100% deaf and received implants, and while his reaction was similar (insofar as he cried, too), he was not able to respond as the woman in the video did for 2 reasons:

1.) Having never heard human speech before, he didn't understand what he was hearing, and
2.) again, never having heard human speech before, he himself didn't know how to talk.

Now granted, my nephew was only 5 or 6 at the time, and this woman was clearly an adult, but the same principles apply, I would think.

I think it's for real too, I just can't see anyone faking it and they would have to be Laurence Olivier to pull it off and then some.

I imagine she had learnt to lip read or something. A lot of deaf people can still speak.

But yeah, it all seems real to me 

You're forgetting one major thing here Dave. She's a woman. 

Try to be more sceptical and less cynical. I tell myself this every day. It's a healthier outlook on life. And always remember "all perception is a gamble" (R.A.Wilson)

I think I might have had a poor choice of word, I honestly don't think Dave is mean, sorry for any offence I might have caused.