Heartwarming / Holy Musical B@man!

• Robin and Batman's first meeting and subsequent night on patrol switches between this and Funny Moments more times than one could count.
• The song "Dynamic Duet" is cheesy, but in the most heartwarming way possible. Seeing Batman finally happy is enough to bring a tear to one's eye.
• Robin is shown to be kinder to criminals than Batman does. When the mob lackey from the opening appears and collapses mid-mugging of Rachel Dawes, Robin catches him as he falls and says that he needs a hospital. He sadly says the boss gave him pop rocks and cola; Robin goes Oh, Crap! and protects Rachel as the man blows up.
• When Sweet Tooth appears, Robin realizes that he must be the one leading the new villains. He tells Rachel to run, and he'll hold the guy and his "Sour Patch" Mooks. Rachel apologizes for saying Robin sucks, but Robin doesn't care. Shame that the Joker captures them both.
• Baby Candy does a Wounded Gazelle Gambit, falling down when Sweet Tooth hits her. Robin goes to help her to her feet, asking if she's okay. Yeah she uses the opportunity to knock him out, but it was very gentlemanly.
• Robin while tied up and held hostage, looks worried for Rachel when she's forced to eat the Warhead and die on camera. He gives Sweet Tooth a steely Death Glare when the latter says he's going to kill the Boy Wonder at dawn, unless Gotham decides to die in turn.
• Doubles as a Tear Jerker, but Batman has a Freak Out on seeing the video footage. Alfred then comes in on cue, as himself, and Batman hugs him in relief. They come up with a plan to stop Two-Face and Sweet Tooth.
• The President orders Superman to arrest Batman. He hesitates, because Batman is a hero and has good intentions.
• Batman checking the results of the Facebook poll... and it's a unanimous vote to save Robin. Even after he was the Scrappy to the people of Gotham, they decided that if Batman liked him, he couldn't be that bad.
• Superman and Batman (and Robin) deciding that they should be... Super Friends.
• Batman's pep talk to Superman, which pretty quickly turns in an Author Filibuster about how awesome Superman and all superheroes are. Why is Team StarKid so good at those?
• The conversation with Penguin in Act 1.
  Penguin: What's the matter, Batman? Not a bird lover?
  Batman: On the contrary. There is one bird that I love. Very much.