These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Fridge Brilliance: The scanner duel between Vale and Revok. Revok has taught himself how to kill people horrifically with his powers as befits his methods and goals as a psychic terrorist, hence the severe hemorrhaging he easily inflicts during his attempt to "suck (Vale's) brain dry". Vale received far more expert training from first Ruth and then Obrist, and is capable of just as much more subtlety, such as scanning a computer over a phone line. Vale is thus mortally injured almost as soon as the duel begins, but eventually calls on that training to enter a state of Tranquil Fury and give Revok exactly what he demands - and then some.
Foe Yay: In Scanners 2, Drak constantly calling David "pretty boy".
Arguably also the name of Dr. Ruth, considering this was just before thatDr. Ruth started becoming more well-known. Cronenburg possibly knew about her, as the Dr. Ruth in Scanners was once a chemist researching drugs for pregnant women.