I would like to mention WOPR from War Games, maybe is an old movie for your students, but it is a more realistic IA centered around the problem of playing board games (if you exclude the part about deciding that a game is not worth the time).
Also I remember an artificial assistant in "The Time machine" that was more convincing than J.A.R.V.I.S because it is not so intelligent, I remember it more like an agent that can find and read you wikipedia articles, but without reasoning about them a lot, but I could be wrong.
The robot companion in Moon is also interesting and comical as it is like a small child that has been told to cheat but can't disobey direct orders.
Other films go around the dilema of creating AGI, like, "Blade runner", "The bicentenary Man", Spilbergs' "I.A.", "Her", or "Ex Machina", they are more interesting from a philosofical point of view (they are all very similar to Mary Shelley's Frankenstein) because the actual implementation is unconceivable right now.