These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
YMMV: Rear Window
Hilarious in Hindsight: Stella questions how Thorwald, would've killed his wife. "Of course, the bathtub! It's the only place he could've washed the blood!" What other Hitchcock film was released six years after Rear Window? Psycho.
Not So Different / Shadow Archetype: There is a theory floating around that Miss Torso and Miss Lonelyhearts are this to Lisa. This isn't so far-fetched when you consider that many of the movements Miss Lonelyhearts makes are similar to Lisa's in the same scene and that Lisa empathizes with Miss Torso fending off advances of "wolves."
Plus the possibility that Jeff and Lisa's relationship might not work out. Lovely and charming as she is, Lisa might end up just as lonely as Miss Lonelyhearts.
The songwriter is played by Ross Bagdasarian, yes THAT Ross Bagdasarian.
Fans of MST3K might recognize Jeff's policeman friend as the Chief of H.A.R.M.
Special Effect Failure: Jeff falling out of the window looks unmistakably like a chroma key effect.
Plus, when everyone runs out into the courtyard to see this, it seems pretty obvious that they filmed the scene at normal speed and sped it up in post.