Justin Timberlake and Amanda Seyfried in In TimeIN TIME

Set in either the distant future or some Bizarro World version of the present, Andrew Niccol's sci-fi thriller In Time imagines an Earth in which time is literally our universal currency; an eight-hour work shift can add a few days to your life span, but a trip to the grocery store will cost you two weeks. (A slowly ticking, neon-green clock embedded in your forearm tells you just how much time you have left to spend.) It's also an Earth in which humans have been genetically engineered to stop aging at 25, and are then allowed one year more before their bodies shut down completely ... unless, of course, they have the proper means, or the proper lack of morals, to buy or steal as much extra time as they want.

Katie Featherston and Micah Sloat in Paranormal ActivityPARANORMAL ACTIVITY

It's not often that you witness an image in a horror movie (or in any movie, really) that you instinctively recognize as iconic. The last one I can think of in the scare-flick genre would probably be Heather Donahue in The Blair Witch Project, with her wool cap, her nose running, and her mouth out of camera range as she videotapes a final, tearful apology. (Seeing that shot for the first time in 1999, you knew it was one that would endure - and be parodied ad nauseam.) But we now have a new addition to the Iconic Image Hall of Fame thanks to Paranormal Activity, which, like Blair Witch, was filmed on a shoestring budget, and which features a shot, like that of Donahue, that will no doubt be instantly identifiable for generations of horror-movie fans.

Sean Faris and Djimon Hounsou in Never Back DownNEVER BACK DOWN

Watching the so-silly-it's-almost-fun mixed-martial-arts melodrama Never Back Down, I felt instantly transported to the summer of 1984, when my friends and I saw The Karate Kid the first time around. Fight Club was still 15 years away, so we weren't yet treated to this film's bone-crunchingly "kinetic" violence, nor to the sight of shirtless brawlers pummeling each other with their pants buttoned 12 inches below their navels. (Nor, for that matter, to topless teenage lesbians making out in a jacuzzi.) But Never Back Down is still pretty much Karate Kid redux, and the experience of watching it felt like time-travel for another reason: The movie's high-schooler lead is played by Tom Cruise.