Reminded me of Warcraft (the first), where, if you kept clicking on the same unit they would respond in more annoyed ways. The best IMHO was the human soldier[1], which would end with "Why do you keep touching me?".
First game that I knew of which had such fun details like that.
They had the same joke in the sound setup program. If you kept clicking "test sound", you would get "it doesn't get any better than this!" in that same annoyed footman voice. But my favourite was the orc destroyer in Warcraft II, which would start singing sea shanties. Or at least attempt to.
I think I prefer the extra quotes from Warcraft II and Starcraft. The latter has some fun references to the Alien franchise and even a callback to Diablo (Protoss probe)
Or the original Baldur's Gate. It had some great quotes. Jaheira's annoyed "Yeeeeesss oh omnipresent authority figure?!" when you clicked on her too often always cracked me up.
First game that I knew of which had such fun details like that.
[1]: https://www.youtube.com/watch?v=jaZyZZtwdzQ