James McAvoy (of "Atonement" fame) is Wesley Gibson, a bored, stressed, panic attack-plagued accounts manager who drags himself through each day having to face his malevolent boss and backstabbing best friend who is sleeping with Gibson's girlfriend. A routine visit to the pharmacy leads him to a mysterious woman (Angelina Jolie) who tells him that his father, one of the world's greatest assassins, was killed on the rooftop by the second world's greatest assassin, a man named Cross. After the obligatory car chase, Gibson is introduced to Sloan (Morgan Freeman) who invites Gibson to join the Fraternity, a millennium-old society of secret assassins whose job is restore order to the world by killing particular targets. Gibson, not wanting to go back to his dreadful life, decides to take his father's place in the society and pursue Cross for revenge.
As far the hyperkinetics go, I suppose I should be glad that the writers at least took the time to explain why all that crap was happening. As much of an action film fan as I am, I've never liked them, even when why they were happening made sense, because they always looked silly. Sometimes, not even the explanations make the mile-high jumping and impact surviving look any better. In this movie, Gibson's excuse for all this is that he has super-strength and accelerated healing, and he still seems to unsensibly survive certain situations. But characters making the most thought-out decisions in a matter of microseconds, surviving wrecks and crashes that would easily kill a number in the hundreds, and easily shooting targets that the most trained and calm snipers in the galaxy would miss are staples of the action genre that date back to early 1940's kung-fu films.
There were times when the dialogue and acting seemed amateur, but I couldn't really tell if that was because of the actors or the director not shooting the scene right (most likely the latter). The special effects in a few scenes, particularly the train wreck, came out a bit shoddy. It almost appeared as if they just filmed a toy train falling down a clearly fake cliff. And they destroy the infinitely miniscule bit of credibility the film had by setting a rule for what these highly-trained assassins can do, and in a later scene defying that rule and throwing it out the window. Or so it appeared to me, I mean, limiting a character's abilities is part of what makes them realistic, right?
But despite these things, I thought the overall film was enjoyable. I'm definitely inspired to read the graphic novel.