Alright, I'm a huge movie lover, so it's really hard for me to pick out specific scenes, but I always love emotional ones- so like in the Avengers when Iron Man nearly dies saving the city, or in Big Hero 6 where Baymax sacrifices himself, or in Guradians of the Galaxy where Groot wraps himself around everyone and says "We are Groot" or in Titanic when the ship is sinking or... :P you get the point!
Tbh, I find the good in almost every movie.