The Stanley Parable is very funny. I don't want to spoil it, especially because reading or watching videos is not the same as interacting with the game, but the narrator reacts to what you do, even if you try to do something absurd there's a good chance that it has a special reaction for that.
South Park games also are very funny, the first one (Stick of Truth) especially. But it is a very dark humor, e.g. the difficulty slider also changes your skin color.