^^ While I never went on the original(had been to WDW but had never been to magic kingdom at the time)I have heard many call it the scariest thing ever put into a theme park, including any haunt event. I have had friends who have ridden it, however, and I know one of them calls it his favorite ride anywhere , despite that it scared him to tears when he rode.
^^^ Dinosaur kinda fills in that position now. As I said, I have never ridden Alien Encounter, but dinosaur is probably the scariest dark ride I have ever been on. Hell, I rode it 2 summers ago, and even though it didnt scare me per say, a lot of it was CRAZY LOUD, and some of the dinos made me jump. Also I did ride it as count down to extinction when I was in second or third grade, and I remember it being terrifying. People always take their kids on rides even if they dont want to ride, cause a lot of people just suck. Its like when you see people with kids or toddlers at a haunt event(like the lady with a 3 and a 5 year old in from of us for corpses at hhn
) and you just kind of ask yourself "WHY!." I mean I love theme parks as much as or more than the next guy, but you often see the stupidest people there!