Question: Where is it ever stated that the shots of unmasked Jason in part 2 are hallucinations of Ginny's, and that is the reason for the difference in Jason's appearance between part 2 & 3?
Answer: It is never stated anywhere that she's hallucinating, some say that Ginny surviving is proof but Jason was badly injured, she could have gotten away, this is before Jason became supernatural. The changes in Jason's appearance is simply a continuity error.
Question: Who is the woman that pops out of the lake and grabs Chris near the end? This is the first and last time that we see her, but who was she? And, was Chris dreaming/hallucinating or did it really happen?
Answer: It was the decomposing body of Jason's mother, Pamela Voorhees. (Who, as I'm sure you know, was the killer in the original movie.) And it was just a nightmare. It didn't actually happen.
Question: How exactly did Jason kill Andy? In other words, how did Andy end up the way he did?
Answer: Jason chops Andy in half with his trusty machete (his trademark weapon of choice). However from the way the kill was shot it looks as though Jason whacks Andy in the crotch from above (as Andy was walking on his hands at the time of his murder) so how he ended up in half at the waist is anyone's guess.
He wasn't cut in half at the waist. Look very carefully and you'll see that he was cut vertically, then his legs pulled it apart to rest his feet by his head.
Question: Can you still get this film in 3D? I heard that it's only in 2D now, but does anyone actually know if there's a DVD that has it in 3D?
Answer: Friday the 13th Part III in 3D is also available on Blu-ray as part of a set of all the films from 1980 to the reboot. I know because I own it. There are two pairs of 3D glasses included in the tin.
Chosen answer: It's was finally released in 3D on DVD in 2009.
Question: This makes no sense at all to me. Exactly how did Chris survive her very first encounter with Jason? She tells Rick about how he grabbed her by the ankles and was dragging her off when she fainted from fear and then woke up in her room at home. What exactly happened in the time in between? It's been mentioned that Jason raped Chris after dragging her away or at least he attempted to rape her. The Jason character does not rape. Period. Are we really supposed to believe that the murderous Jason just suddenly felt bad for her and brought her back to her home of his own free will? (00:48:30 - 00:51:45)
Chosen answer: Chris never said anything about rape. As for what happened to her, no one really knows. Maybe she reminds Jason of his mother like in the new Friday the 13th movie.
Answer: The very ending of part 2 proves this, as Ginny appears again found by the police and ambulances. 1) if Jason really got her she would be dead, not alive, he wrapped around her. 2) Paul was dead, not alive and 3) as far as Jason's appearance she would not be able to stand it at first glance, so in her head she would put more human features on his face to be able to deal with it.