I suppose you could end up choosing the voices of movie characters. Maybe all the characters in The Witch replaced by the cast of The Office.

Yup the possibilities seem endless
I would probably give some funny voices to movies or movie characters I don't like. I would make movies like Harry Potter totally ridiculous in that way. Yeah I truly hate those.

It sounds like there will be MANY interesting things that could be done with that technology. You could create alternative versions (audio only, for now, of course) of whatever horror movie you choose, and you could insert the voice of whatever actor you like into the script, saying whatever lines you make up for him to say like, you could put Vincent Price's voice in the 2011 version of Fright Night, and give him whatever lines you want. Or even Bela Lugosi! That would be COOL, to stick Bela Lugosi's voice into your own adaptation of the 2011 Fright Night, because no one had ever even heard of Las Vegas when the Bela Lugosi Dracula came out it would be a really cool anachronistic setting to mess around with.
Or you could do it the other way, chronologically, and put the voices of the characters in The Blair Witch Project into the movie Freaks, and give them whatever lines you wanted. Or you could invent conversations between actors/characters from different eras, placed in whatever movie you wanted. Like, Boris Karloff talking to Danielle Harris. Or Lon Chaney Jr. talking to Sid Haig.
People will be thinking of interesting things to do with this technology for years to come.
For Grave Encounters I'm Lance Preston.

Thx for sharing tommix, sounds really cool!

What could you possibly make him say that would be more embarrassing than what he's actually said?

Lol and make him say things that make sense, now that would be funny

Interesting, I'd like to try it with Donald Trump's voice.

That's nice. Thanks for sharing.