I suppose also staying up all late at night is also another factor that leads to false memories aside from only sleeping less than 5 hours. It's better to sleep at night than at day. Sleeping at day probably can also cause false memories.
I really like Janet's voice. It's so sweet and soothing.
A scene from Zelig:
https://www.youtube.com/watch?v=hPTq9ki_oAs
This film takes place in the 20's and 30's, so Gordy used old cameras and lenses and did crinkles and scratches to make the footage look like it was shot in those decades.