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.
Genius Bonus: If you've ever been involved in theater, you will understand a good deal more of the show. If you also have a thorough knowledge of Shakespeare, it takes on entirely new depths.
Squick: After his death, Oliver's will states that he wants his head removed from his body, boiled, and the skull used in all future productions of Hamlet. Even the other characters are grossed out.
Tear Jerker: Charles Kingman's King Lear, made even more poignant by the fact it was William Hutt's last performance before he died of leukemia.