Harish Palaniappan's

If you have a flair for science fiction, be it book or movies, or if you like Einstein, or time travel concepts, then Deja Vu is a movie you will totally relish.

Technically sound, fiction, of a complex imagery concept, with which a team unravels a crime scene and even gets to change the way it happened.

Well, what that means is .. go, watch the movie and you will like what you understand and how the director has brought in the pieces of the story so well towards the end of it... so well really, no matter it still ends with the lead stars surviving though 5 mins before the end it looks like an entirely great story with the lead stars unable to change what happened except that they change the route of how it happened.

The line I liked in this movie... "you cannot change the future .. but may be [by travelling back in time] you can change the route of events to the future".

For the sake of it,As per a dictionary:

Déjà vu is French for "already seen." Déjà vu is an uncanny feeling or illusion of having already seen or experienced something that is being experienced for the first time.