For me:
RE2: Leon falling through the chute and hearing the Birkin scream from the jail cell.
RE3: Entering the court yard where there's a statue, only to realize Nemesis can be in that area too!
And just for the hell of it I want to give a shout out to RE4's basement section with that nearly indestructible creature. Having to avoid its arms from the ceiling and waiting for it to rush at you as you waited for the elevator is scarier than most shit in the entire series.
RE2: Leon falling through the chute and hearing the Birkin scream from the jail cell.
RE3: Entering the court yard where there's a statue, only to realize Nemesis can be in that area too!
And just for the hell of it I want to give a shout out to RE4's basement section with that nearly indestructible creature. Having to avoid its arms from the ceiling and waiting for it to rush at you as you waited for the elevator is scarier than most shit in the entire series.