- Well, Phineas and Ferb find about Perry's secret identity. All fun and games except you know what that almost ends up meaning.
- Their reactions. Ferb actually takes the whole thing in stride but Phineas is completely outraged. Perry actually looks upset and awkward as Phineas chews him out with Ferb even trying to jump to Perry's defense but Phineas isn't having it. It's upsetting given how close those two are.
- This movie manages to make Status Quo Is God a tear jerker.
- "I love you, Pal."
- The fact that it does not end with mourning for those events, but Perry happily holds on to the memory of the best day ever.
- Phineas and Ferb meet their counterparts, and the alternate Phineas sees Perry and immediately hugs him, thinking he's their Perry, finally come home. When Phineas tells him that it's the wrong Perry...Phineas-2: Wait...can I hold him a little longer?
- Even Ferb (both of them, in fact) gets teary-eyed at that part.
- Made all the more poignant when you remember how heartbroken our Phineas and Ferb were when Perry vanished for one day. The alternate Phineas and Ferb have been without him for months, at least.
- "I Walk Away".
- "I thought you couldn't spell 'platypus' without 'us'." Though, after a pause, Ferb makes a reply that makes this more of a funny moment.
- The final scene mostly heartwarming, but the last photograph◊, with Phineas and Perry sadly hugging...
- Made even more upsetting when you remember that Phineas had been the most messed up over learning he was a secret agent.Phineas: Was that evil guy right? Were we just your cover story? Were you ever really our pet or part of our family?
- Made even more upsetting when you remember that Phineas had been the most messed up over learning he was a secret agent.
- The scene where all of Phineas and Ferb's friends and inventions arrive one by one in all their glory, fully ready for battle. It's not a scene where you'll shed tears of sadness, but some may shed tears of joy at the return of all the past inventions and the realization that something really, really awesome is about to happen (which it does).
- When the main characters are all dangling off the side of the goozim cage, Perry is clearly in great anguish, knowing that if he fails, he will doom not only himself but also the four individuals who he cares for the most.
- A small one (and one that also doubles as a darkly humorous funny moment), but our Doofenshmirtz's reaction to Doof-2 revealing that his Freudian Excuse was something as minor and petty as losing a toy train. Doof-1, who had a severely traumatic childhood, is understandably both confused and a little disgusted.Doof-1: That's it!? That's your big traumatic childhood!? That you lost a toy train!? Dude, I was raised by ocelots! Literally disowned by my parents and raised by South American wildcats! I had to work as a lawn gnome, I had to wear hand-me-up girls' clothing! NEITHER OF MY PARENTS SHOWED UP FOR MY BIRTH!
- Before they fire up. the memory eraser on the gang, Monogram is clearly shown with tears in his eyes, which he refuses, and, as a Call-Back to an earlier episode, claims to be "sweating from [his] eyes."
Tear Jerker / Phineas and Ferb the Movie: Across the 2nd Dimension