Foltest's response to a question of what will happen to the bastard children that set off the war in the beginning of the game.
Foltest: They're my children. If I hear the word "bastard" one more time, someonewill die!Painfully!
Also from the Prologue: Foltest has a friendly chat with a common soldier he recognizes from a previous battle several years ago. On learning of his hardships over the years, he promotes the soldier on the spot. Say what you will about Foltest, but he does genuinely seem to care for his soldiers.
Triss promising to help Geralt find Yennefer. Doubles as a Tear Jerker, since she's obviously heartbroken about it (being in love with Geralt since forever and all), but she's willing to suck it up for her friends.
Roche comes to Geralt's rescue in the Kaedweni Camp on Iorveth's path despite the fact that Geralt betrayed him for the infamous Elf.
If Geralt decides to go to the Nilfgaardian Compund in Loc Muinne to rescue Triss in Chapter III: Shildard is killed by the commander of his guard on what is revealed to be the orders of the Emperor himself. This is strongly hinted to be because Shildard was willing to kill Geralt; whom the Emperor is fond of, as the Witcher did him a great service in the past.
Of course, then they try to take Geralt down anyway...
Even though it's a taboo in Dwarven society, Cecil Burdon is The Teetotaler due to making a promise to his nephew's mother to be sober as a judge for the rest of his life.
Finding Iorveth's dream in Vergen, which depicts him sitting quietly at home, his bow leaning against the table as he smokes a pipe while a pig roasts over the fire.
Any ending in which you spare Saskia. In a genre in which dragons are more or less cannon fodder to be slaughtered, that this one stands out by treating her with respect from her place in the story and from the characters in game, especially Geralt, is a nice change of pace. His line at the end, when on Roche's path and saving Triss, sums it up best:
Geralt: You know that could be one of the last dragons alive. A noble and beautiful creature.
Despite also being a Tear Jerker, on Roche's path Geralt comforts a distraught Ves after she is raped and witnesses the death of all her fellow Blue Stripes with a hug. He doesn't push her away when she hugs him and instead puts his arms around her, a rather strong show of affection from someone who rarely openly shows affection.
Dandelion's and Zoltan's absolute loyalty to Geralt making them willing to follow him regardless of which path he chooses. Special mention to Zoltan as he's willing to follow Geralt to a camp of solely human soldiers that look down on and mistreat nonhumans.
Dandelion has his moments too, such as on Roche's path when Geralt tells Dandelion to run away because King Henselt is executing all those involved in a conspiracy plot against him, and Dandelion wrote a scathing pamphlet making fun of and deriding Henselt. Dandelion finally backs down and agrees to flee to Oxenfurt, but not before first promising to find Geralt "once all this blows over". Even Geralt gets in on the heartwarming when he responds in kind, saying:
Geralt: Leave, Dandelion. Hide. And I'll see you soon, old friend.
The reveal that Letho and his group of Viper School Witchers helped Geralt track down the Wild Hunt to save Yennefer from them, paying him back for saving his life from a Slyzard in the swamps of Angren. Even after Geralt is forced to exchange himself to Eredin for her life, the Vipers proceed to honor him by looking after and protecting the amnesiac, sick Yennefer, nursing her back to health and making sure she is safe in Nilfgaardian territory, which is a harsh and dangerous land for unstable magic users. Even staying with her instead of abandoning her despite his misgivings about her, the way she endangered them by proxy, with her temper tantrums and amnesiac antics drawing too much attention to their group, which ended up getting them all captured by Emhyr's Secret Police and setting off the events of the game.
