Episode 4: Sometimes You Can't Live Without Dying, Baby
The zombie Stiltonian the crew turned to for advice after getting zombified by it apparently got a job at the movie theater. As the undead crew move in to take their seats, a zombie hunter comes in soon after and asks for a ticket. Catching onto the charade, it bites him the second he sticks his hand through the hole in the ticket booth's glass.
Episode 5: A Merry Companion is a Wagon in Space, Baby
Dandy and his interactions with Adele, the little alien girl.
He becomes more and more like her big brother. It's especially heartwarming when he stays up all night and finds the little alien girl's grandfather.
The last scene has one of these after another. Dandy decides against taking her to the Registration Office despite her worrying about all the money he spent tracking her down. Then she asks to join his crew and he more or less says 'you can when you're older'. The final lines in the episode cap it all: "I'm gonna grow up quick, and when I do, I'll be the one hunting you."
Episode 8: The Lonely Pooch Planet, Baby
Dandy and the gang's interactions with Laika. As opposed to Spike, who "hates dogs, women and kids", these seem to be the only things that influence Dandy to do pure-hearted deeds for once.
Episode 10: There's Always Tomorrow, Baby
Initially, Meow isn't too keen on wanting to visit his home, saying that he left because he found life there too boring. Over the course of the time loop though, Meow decides to use this as an opportunity to reunite with his father and at least attempt to try and learn more about the job his dad works in (a job Meow didn't really want to go into). By the end, Meow feels like he's become much closer with his father, and when he's leaving he gives a heartwarming goodbye to him, his father saying he doesn't mind that Meow choose to explore the universe instead of becoming a metalworker.
Hell, Meow's father isn't just okay with Meow following his own path, he was downright proud of him for it! The barkeeper mentions Meow's dad brags about his son every night he's there, about how brave and special Meow is.
Episode 11: I'm Never Remembering You, Baby
Subtle example, but Bea is prominently shown being concerned for Gel's well-being. Bringing him tea and asking him to take breaks, actually stopping being a slob for once and trying his best as a replacement, and not abandoning him by evacuating when Gel's going crazy in the end. This is especially noticeable when you remember Dandy didn't really give a shit when Meow seemed sick.
Episode 13: Even Vacuum Cleaners Fall in Love, Baby
When Dandy discovers what happened to Meow and QT, he's absolutely pissed, which contrasts greatly with his usual Jerkass behavior toward them.
Past Meow and QT trying to save their version of Dandy from being abducted by the Ukulele Man.
Episode 16: Slow and Steady wins the Race, Baby
Meow trying to stop Carpaccio from committing suicide.
Episode 17: The New Transfer Student is Dandy, Baby
Dandy inviting the awkward geeky girl to the Prom. Turns out she was the Cliponian they were looking for, but they get so caught up in making Prom Night special that they forget they were looking for a Cliponian.
In his own...let's say special way, Dandy proving Freckles is beautiful in her own way...by pointing out she has a rockin' booty.
During graduation at the end of the episode, Freckles tells Dandy she has a gift for him. She kisses his cheek, Dandy himself taken aback by the gesture. Not to mention that that we're told a Cliponian's head flower sprouts when they fall in love, and Freckles flower sprouts as she watches Dandy and his crew fly away.