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.
Award Snub: Bob Newhart starred in two popular, long-lasting, critically acclaimed sitcoms, The Bob Newhart Show and Newhart. The ways in which the Emmys snubbed both shows, and Newhart himself, are simply staggering.
Newhart was a more "fortunate" show in Emmy nominations than its predecessor if by "fortunate" you mean "getting your hopes up as your show gets nominated for several major awards every year only to have those hopes dashed to pieces as your show fails to win a single award". Bob Newhart (for Outstanding Lead Actor in a Comedy), Peter Scolari, and Tom Poston (the latter two for Outstanding Supporting Actor in a Comedy) were all nominated three times each and never won. Poor Julia Duffy was nominated (for Outstanding Supporting Actress in a Comedy) for all seven years she was a regular on the show and never won. The only year the show itself was ever nominated for Outstanding Comedy was its first year before it grew the beard, nominated in the only year it really didn't deserve to be.
Ear Worm: There are some people who have not seen the show in decades but who can recall the theme tune just by seeing the title card.
Ensemble Darkhorse: Peter Scolari's Michael Harris was written as a one-shot character for a season 2 episode, but the producers liked him so much they brought him in as a regular for season 3.
Same with Larry and the Darryls, who were one-shot characters for the second episode and brought back little by little, eventually replacing Kirk as the Loudons' next door business men.
Fridge Horror: In one episode long before the finale, it actually occurs to Dick that he might be stuck in a nightmare, and he tries pinching himself. It doesn't help.
Rewatch Bonus: If you've seen the final episode and know that everything is All Just a Dream, the increasingly insane and unrealistic behaviour of everybody except Dick in earlier episodes makes sense.