In the scene in which Nedry and Hammond are arguing, Hammond calls him Dennis (which is the character's real name). Later on, when Hammond is discussing the park's failure with Dr. Satler, he refers to Nedry as Harry.
I have heard this, and thought he said Harry, too, it sounds like he says "Harry Nedry was a mistake", what he actually says is "Hiring Nedry was a mistake",
-Drakk )))
This isn't a slip-up as far as I can tell. Hammond clearly calls Nedry by his first name; Dennis. The character's full name is Dennis Nedry who is played by Wayne Knight.
And Hammond does say "Hiring Nedry", also.
He says "Hiring Nedry was a mistake, we were far to dependant on automation." I know that scene word for word, I memorised it for a drama thing and he does NOT say Harry.