I...surprisingly loved this movie.
I *knew* I was almost certainly going to LIKE it, unless they majorly dropped the ball, but I did not expect to like it as much as I did. This is exactly the sort of science fiction movie that I want to see. A great high concept idea that mirrors current situations and can thus speak about them in allegorical ways, but also isn't terribly dry and technobabbly either, with some good action.
So, the idea is that at some point in the future, we've found a way to stop the aging process, and time has become the new form of currency. Everyone ages normally until they hit 25 at which point it stops, and a digital readout on their arm begins ticking down from one year, the time every 25 year old has left to live. You can earn money via your job, or be given more time, and everything revolves around that. So like any other currency, really. They think this through...well enough, I think. There's a few logical gaffes here and there, but for a movie they get the gist out of the way so you get it, and don't dwell on the intricacies too much, which is just fine.
Our protagonist, Will, who lives in a run down part of the world where everyone is just scraping by trying to survive day by day, runs into a man with over a century on his clock, which is a bad thing to flash around in that part of town, since you're likely to be mugged for your time. Which he pretty much promptly is. Will saves him, finds out the guy is over 100 years old, and while he could live forever, the human mind, in his opinion, isn't meant to, and he WANTS to die. So he gives his time to Will, and dies from a lack of time, setting into motion a series of events that cascade into the rest of the plot.
That? That's a good setup for a story right there. And surprisingly, Justin Timberlake is...actually not a terrible actor. Most of the cast is good, the plotline books along pretty well with very few lulls, and is just a plain fun movie, with some social commentary thrown in on the haves and have nots.
I *did* get a little sick of the time based puns after awhile, although many of them do make sense, and I can see them occurring naturally if such a situation actually did come to pass.
The movie turns into an odd heist movie during the last third, trying to steal time from the rich and give it to the poor, which feels ill conceived, and poorly thought through, but it's still fun, and makes sense. At the end of the movie, I was left with the feeling that they didn't really accomplish much, but Will and his girlfriend feel that way as well, but are continuing to fight the good fight as a new temporal Bonnie & Clyde.
There was also a lot of backstory they hinted at for a number of characters that the movie never QUITE fleshed out, and it could have used maybe 10 or 15 more minutes to delve into those tantalising tidbits they teased us with but never got to the meat of, which is a shame, because they would have helped the movie a lot.
All in all, a solid two hours of my life I would gladly give up again. It's not perfect, but it tried, and mostly succeeded. We really need more science fiction movies like this, people.