The moment that Woody discovers why, exactly, he matters so much not just to Al, but also to Bullseye, Jessie, and, even, on a deeper level, Stinky Pete. The exact moment the curtains are pulled back to reveal every single piece of merchandise from the Woody's Roundup days, coupled together with the slow, dramatic pan and the light that just seems to glow off of Woody's broadening, child-like grin is just plain adorable and tearjerking.
After Woody was kidnapped by Al, Buzz without hesitation is ready to pull together a rescue mission for him.
"Woody once risked his life to save mine, and I couldn't call myself his friend if I wasn't willing to do the same. Now who's with me?"
That also shows that the toys still feel bad for how easily they turned against Woody.
When the toy restorer comes to fix Woody, he treats Woody like an actual customer. He fixes a bib around the cowboy's hat, rests his hat on a tiny stand, and even polishes his boots. It's slightly marred by him painting over Andy's signature and the fact that he's getting paid, but you have to admit the man shows more care for Woody than Al does.
You can't rush art!
Woody and Buzz talk to each other about the fear of eventually being forgotten by Andy someday.
Say what you will about "You've Got a Friend in Me", but "When She Loved Me" deserves to be on this page. That is the strong bond that Emily and Jessie had,brief as it was.
It helps that the montage that went with it was almost identical in style to the "Strange Things" montage from the first one — watching Jessie's toys and merchandise fading into other things. And even though it ended in a sad way, Woody began to understand Jessie better, which is also quite heartwarming.
More cute than Heartwarming, seeing Woody, Jessie, and Bull's Eye reenacting scenes from Woody's Roundup, then switch to having Jessie and Bull's Eye gang up and tickle Woody is pretty sweet.
Some may call this a slightly skewed version, but there's the scene with Zurg and the other Buzz playing catch as father and son.
One of the things that made Woody decide to go to Tokyo was learning that if he left Jessie and Bulls-Eye would go back to storage. He ultimately decides to take them both with him.
What makes this more heartwarming is where Woody looks at Jessie, who then looks at Woody. There was no words between the two, just only Jessie turning from bitter to happy as she realizes that Woody has decided to stay with them and not with Andy, thus signaling that the two finally made up for their short falling out earlier.
Despite Woody's contention with the others over wanting to go back to Andy, Bullseye still remained loyal and affectionate around Woody despite his clear disappointment. He even tried to help Woody get his arm back from Al.
Woody: Come on, you don't wanna help me. I'm the bad guy. You're going to go back in storage because of me, remember? Now just go!
*Bullseye wags his tail and happily licks Woody*
Throughout the movie, Bullseye seems the one toy desiring to have Woody stay as a friend rather than just to maintain their "destiny" at the museum. When Woody tries to convince them to join him as Andy's toys, while Jessie is conflicted and Stinky Pete snaps and resorts to force to keep their destination ongoing, Bullseye instantly agrees.
Look how Buzz (and other Buzz) instantly springs to life the moment Woody changes his mind about staying and calls him back.
Buzz: Way to go, cowboy!
*The other toys run back cheering*
Mr. Potatohead saves the LGMs from falling out of a moving vehicle. They immediately tell him that he has saved their lives and that they are eternally grateful. Near the end of the film, Mrs. Potatohead decides to adopt them.
And when he does save them and they thank him, all three pick up his fallen ear at once and hand it right back to him. That's just too cute.
The scene where Woody rescues Jessie from the flight; she's by this point the only one of the four toys remaining in the box to still be trapped in there, and by the time he comes across her she's curled up in the fetal position in the middle of a panic attack:
Woody: Excuse me, ma'am, I do believe you're on the wrong flight. Jessie: Woody! [she hugs him] Woody: Come on, Jessie. It's time to get you home. Jessie: But... what if Andy doesn't like me? Woody: Nonsense, Andy'll love you! Besides — he's got a little sister... Jessie: He does?! Why didn't you say so? Let's go!
Andy fixing Woody's arm at the end, especially after Woody was worried that he'd be abandoned because of the broken arm.
Woody: Well, whaddya know...
Buster's Establishing Character Moment. At first it sounds as though he is The Dreaded, causing everyone to hide. When Buster does show up he does trash the room a bit and grabs Woody. Just when we think that he is gonna pull a Scud on him, he instead licks Woody affectionately, causing Woody to unfreeze and laugh. He even timed how long it took Buster to find him, implying this wasn't the first time they played hide and seek. This shows that much like Andy is to Sid, Buster is the good counterpart to Scud.
When Stinky Pete stops Woody from leaving, Jessie protests that "this isn't fair" despite the fact that she's still unsure about going with him. While she might not necessarily be happy with the idea of Woody leaving, it does suggest that she's grown to respect his wishes.
A Heartwarming in Hindsight case, while Stinky Pete being sentenced to "play time" with an "artistic" young girl was designed to be a comeuppance, side media revealed he had come to like his new owner. It seems Love Redeems.