This is very cool. They've made a sequel to Before Sunrise called Before Sunset. Same couple (Ethan Hawke and Julie Delpy), but nine years later. I really enjoyed the first movie (as anyone who ever wandered around Europe with a backpack will relate to) and though I must say that ol' Ethan hasn't aged well this looks to be nicely done sequel.
Now if they'd just do the same thing with the kid from War Games. ;-)