Among more important things, Side Effects is a first-rate mystery of the classic school in which all the clues are out in sight and the solution links everything together into a single coherent story. The story is usually not particularly credible, because crime is more banal than the mystery story form likes to suggest; but it does fit together into a logical pattern with no loose ends. This is a very rare situation these days, on film, and congratulations for it.
I thought Quartet was a short-story movie, like the 1948 classic of Somerset Maugham stories. I was delighted to find that it is one of those multi-starred character studies that the British are so good at, but Americans hardly touch except on television like "Seinfeld," which is famously about nothing.
Parker is one of those standard violence thrillers, with Jason Statham as one of those heroes who can push a knife blade through the palm of his hand in order to get a grip on the villain, and Michael Chiklis, who can take six bullets in the chest at close range and not even be slowed down.
Mama is a horror movie that is not a "splatter" movie, which means it does not rely on blood and pain and sadism for its effects, and that's all to its credit. How often do you see a horror movie rated PG-13?