This movie involves a select group of people who can "jump" from one place to another within the flash of an eye. You can jump from continent to another, or a closer area, as long as you have previously seen the jumping spot with your own eyes.
Hayden Christensen has the starring role in this film, and Samuel Jackson plays the villain (or good guy?) who makes it his life mission to exterminate these jumpers, believing they do more harm than good. This movie has a neat, if overdone premise, that unfortunately is too underdeveloped. It wasn't clear to me how one gets to become a jumper and the ins and out of how they use their powers.
Also, I'd have to say that the acting is quite bad, Christensen will never win an academy award, suffice to say. Rachel Bilson (who played "Summer" in The O.C.) has her charms but is definitely not the greatest actor either. "Jumper" is a fun and fast-moving film that sometimes comes across as amateurish. Take it for what it is.