If you're still looking for a Halloween-themed program to get your youth thinking, I strongly recommend the documentary "Hell House" about a church (Trinity Church -Assemblies of God in Cedar Hill, Texas) that hosts a yearly alternative to the local haunted house events. Instead of ghosts and goblins, their "hell house" includes scenes like a girl getting an abortion, a gay man dying of AIDS, or a girl at a rave being slipped a roofie and raped, and of course all with the implication that these people are going to hell for their misdeeds.
To be clear: I find this portrayal of the Christian faith so far from anything I believe -- these folks might as well be practicing a completely different religion from the one I call Christianity. But -- the documentary is excellent and lets the subjects speak for themselves. Particularly powerful is the scene where a couple of local young people confront one of the organizers about the whole project. The film could certainly stimulate some great conversation about faith, fear, grace, sin, evangelism, and culture vs. Christ.
On a side note, I just watched Ingmar Bergman's "The Seventh Seal" last night for the umpteenth time. Funny how all the scare tactics the Church was using back in the middle ages during the plague still seem to be in vogue today.
Update: Check out this episode of the radio program "This American Life" which features an interview with the director of "Hell House."