Throwing the ball for Scratch (even if it's a bit buggy).
The first time I saw the owlbear cub's big blinking eyes. So adorable. Dear Larian: please make a plush owlbear cub.
The Underdark. When I first heard "Underdark" I was thinking it would be tedious, dark, and dreary, but I loved the ambience: the glowing insects, phosphorescent fungi, the myconid colony, and even the fish folk. It felt like a darker version of the Secret World of Og. In fact, I was so caught up in exploring it, that I almost forgot to rescue Halsin.
I was glad to see that there was a dialogue option letting him know I'd already found and cleared out the Underdark outpost.
