Speaking of the Christmas Episode, this troper would like to nominate the kids getting their gifts. It always makes her sleep good.
Sunny rekindling with his mentor.
The last few minutes of 'Free Philly'. To elaborate: After Philly Phil transfers and his friends feel guilty about it, they build a huge float specifically out of all the kinds of things Philly Phil likes, then sing a song dedicated to him. Then they loose control of the float, prompting Philly Phil to save them. Then some of the students from the school he transferred to come out to take him back, calling the others 'music geeks' in the process. Cue:
Philly Phil: "Hey! Those 'Music Geeks' happen to be my friends!" Phil's Girlfriend: "What are saying Philly Phil? Philly Phil: "I guess I'm saying... I'm a Music Geek!" Random Geek: "You can't be a Science Geek and a Music Geek. You have to choose." Lil'D: "No you don't. We like you exactly the way you are. We sorry we ever made you feel like we didn't..." Geeks: *Angry Muttering* Philly Phil: *Quick Death Glare at geeks* Really? Lil'D: "Yeah man. You ain't no kind of Geek. You're our friend. For life."
At the end of 'Prank Yankers', even after getting clocked by Tamika, Li'l D proudly exclaims that they all missed her and the kids pull in for a group hug.
Li'l D's speech to the chairman in "Vote Sunny." To writ, the kids, working together, have snuck into the Atlanta Teacher of the Year Award banquet, and accidentally got Sunny disqualified. Li'l D's response?
Li'l D: "... You gotta do the same thing in music as you do to break into a ridiculous security building. And that's work together.
Other kids: (Agreement)
Li'l D: "We seven very different kids. But he [Sunny] got us all harmonized and stuff. You don't believe me? Check this out." (He turns to the other kids) "You wanna show these guys what kinda teacher Sunny is?"
(Agreement, followed by the kids taking out their instruments... And the song, "Teacher of the Year.")