Corrected entry: When Dennis hears the strange noise for the first time and takes his camera with him, to the living room, there's a doll placed leaning against a pillar. As his camera turns back there for the second time, the doll's missing.
Corrected entry: In the movie, Randy mentions the movie Casper. Paranormal Activity 3 was based in 1988; the movie Casper wasn't released until 1995.
Correction: Nonsense. He references Casper the Friendly Ghost, a cartoon character created on the 1930's who starred in a number of cartoon shorts in the '40s and '50s. The cartoons were aired on morning and afternoon television throughout the '70s and '80s, so it would be something Randy is familiar with.
Correction: Toby moves things around frequently. This is just another example of that.
Guy