Heartwarming / Scooby-Doo! Legend of the Phantosaur
The gang works pretty hard to find a safe place for Shaggy to take a vacation after they find out about Shaggy's condition.
When Winsor gets arrested.
Velma: Do you think we can go out again? You know, after you get out of jail?
Winsor: Consider it a date.
A very small one, but Daphne's reaction to Fred asking her if she's ever had a crush on anyone. She says no and immediately drops the topic. It's pretty obvious what's going on here.
Fred convincing Shaggy that he's capable of jumping to the ledge without hypnosis.
Fred: I don't know much about hypnosis, Shaggy, but I know one thing. It cannot make you do things you couldn't do without it. All that stuff you did when you were brave, that was you. It's inside of you. You just have to let it out.
Brave Shaggy saving Tex's life. You think a guy without fear might just let the guy drop, but the movie goes out of its way to show that Brave Shaggy and Cowardly Shaggy really are the same person with just a different mentality. Even when under hypnosis, Shaggy is the Nice Guy.