And the entire episode "The Hand You're Dealt" (the pyro one), where Nathan is constantly finding excuses to touch Audrey—hand shakes, high fives, and so on. It would be creepy anywhere else, but in context its adorable since he can't feelanythingbut Audrey.
Also counts as something of a moment of funny since both in-universe and out, every one seems to notice his very odd behavior but they just don't comment.
Taking in a stray cat.
The Ending of the 10 plagues episode with the happy baby and the shadow rabbit.
In "Fear and Loathing": Nathan giving up his ability to feel to allow Jackie to be rid of her much more cumbersome trouble.
"Business As Usual": Nathan giving Audrey Lucy's address, followed by Audrey promising she will come back and then finally kissing Nathan on the lips.
Lucy Ripley's reaction when Audrey arrives. From Lucy's point of view, she's meeting a beloved friend she has not seen in 27 years.
Duke, when faced with the ghosts of his father and the Reverend telling him not to listen to Audrey, that she's a liar, quietly replies, "No. She's my friend."
"Silent Night": Audrey getting Nathan and Duke the present they wanted.