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: Lincoln was expected to be the heavyweight of the 85th Oscars, leading with twelve nominations, but it only ended up winning two, Best Production Design and Best Actor. And even then, the Production Design win was seen as more of a slight surprise, compared to other lavish period pieces like Anna Karenina and Les Miserables (2012).
Crowning Music of Awesome: After the passage of the 13th Amendment its supporters start singing the "Battle Cry of Freedom" in the Capitol and on the streets. The congressmen actually start doing it while still inside the Capitol.
Most of the soundtrack, really. John Williams has outdone himself, again.
Ensemble Darkhorse: In a movie hyped for Daniel Day-Lewis' deeply committed and highly accurate portrayal of Abraham Lincoln, it's Tommy Lee Jones' Thaddeus Stevens that steals the show.
Also, James Spader as W.N. Bilboe, one of the lobbyists working to help pass the amendment.
Genius Bonus: Possibly. In the scene where Robert returns, he is greeted enthusiastically by Tad, who starts chattering away at him while somebody shoves a petition at him about his insolvency proceedings, asking if the President can look at it. What Tad is saying is almost completely incomprehensible but listening closely you can tell he's talking about Charles Darwin and the Origin of Species. note This may have been intended as a brief nod to the fact that Abraham Lincoln and Charles Darwin were born on the same day.
Tad. She's asleep, probably, they went to see Avonia Jones last night in a play about Israelites.note This would have been Leah the Forsaken by Augustin Daly. Daddy's meeting with a famous scientist now and he's nervous because of how smart the man is and the man is angry about 'cause there's a new book that Sam Beckwith says is about finches, and finches' beaks, about how they change, and it takes years and years and years, and...
One-Scene Wonder: Jackie Earl Haley's very brief but very memorable performance as Alexander Stephens, Vice President of the Confederacy.
Robert E. Lee, even though, and maybe especially because, he's The Voiceless.
S. Epatha Merkerson as Thaddeus Stevens' longtime mistress (would've been his common law wife, if the laws of the time allowed interracial marriage) Lydia Smith. One scene, where she reads aloud the 13th Amendment, conveying how much this means to her and to every American of her race.