Pretty much any game in which your character doesn't have an actual voice, so Pillars of Eternity, Dragon Age: Origins, Baldur's Gate, Planescape: Torment, Fallout 1 and 2 (3 and NV were pretty good too, but not quite as good as 1 and 2), etc. I lost count of the # of times in Mass Effect or Dragon Age: Inquisition when I'd click on a dialogue option and then my character says something that was completely different than what I was expecting, and not something my character would say.
Special mention has to go to the Fallout games, which have hysterical dialogue options if you play as a really stupid character.
Special mention has to go to the Fallout games, which have hysterical dialogue options if you play as a really stupid character.