The Extended Edition of this episode includes the song What Does He Want?, which was not included in the version that first aired.
In the episode Gaming the System Major Monogram informs Perry the Platypus that OWCA has been spying on Dr. Doofenshmirtz's computer and aside from information about the latest evil scheme, they learned what Doofenshmirtz is getting Perry for Christmas. It's a vase. In this episode Perry gets his Christmas present from the Doctor and it is, of course, the very same vase the Major talked about.
After Dr. Doofenshmirtz hangs up the phone, the phone and the package he's holding both disappear.
The background behind Major Monogram on the screen doesn't match the background behind him at the party.
Meap, from The Chronicles of Meap makes a cameo at the end of this episode.
This episode contains the most songs in one episode, beating Dude, We're Getting the Band Back Together which only had five songs.
Isabella says that she doesn't celebrate Christmas when the boys ask her if she is sad that Santa put Danville on the naughty list. But earlier, when Phineas asked them if they wrote letters to Santa asking him for things, Isabella said that she did. This would mean she believes in Santa Claus, and therefore she had to celebrate Christmas.
It's revealed that Isabella celebrates Hanukkah, which means that Isabella is Jewish.
Phineas and Ferb Christmas Vacation! (Theme Lyrics):
Chorus: (singing like in a classic Christmas carol) There are two wondrous weeks for our winter vacation, before New Year's and school comes to end it.
So the holiday challenge for kids of all nations is finding a good way to spend it.
Phineas: Ah, Christmas Eve! I was a great idea to climb back into bed this morning. Oh, I almost forgot; Helmets! All set? Let's do this thing! (The camera pans out to show him and Ferb outside in their beds joined together to form a toboggan ready to go down the hill)
Bowling for Soup: (playing rock music) Like maybe turning our beds into dual toboggans, And sliding down the ski-jump tower.
Building a snowman the size of Colossus, Or giving a Yeti a shower.
Chorus: Fa, la, la, la!
Bowling for Soup: Staging a snowball fight, with giant catapults, and snow angels that really fly.
Rocking A Christmas Carol, wrapping a present.
Or just shoveling snow off the drive! (pause as the boys are shoveling)
Phineas: Well, they can't all be fun.
Bowling for Soup: As you can see there's a whole lot of stuff to do before school starts next year.
So stick with us 'cause Phineas and Ferb are gonna spread some Christmas cheer.
So stick with us 'cause Phineas and Ferb are gonna spread some Christmas cheer!
Candace: Mom! Phineas and Ferb are making a Christmas Special!
Josh: Hey, let's all sing "But it's Christmas, Becky"!
Becky: Ugh! You have got to get over me, Josh.
Buford: I don't see what everyone's so worried about. I got this system, see? You act any way you want, all year long, but then right before Christmas, you do one big selfless act of kindness, and Santa will wipe your slate clean! Works like a charm.
Baljeet: Really? So I might still have my one big Christmas wish come true?
Baljeet: Are you not going to ask me what my Christmas wish is?
Buford: Nope! It'll only wanna make me hurt you, which will counteract my one act of kindness.
Baljeet: All I want is one sweet, special Christmas kiss under the mistletoe.
Buford: I'm outta here.
Baljeet: (angrily) Not from you! From a pretty girl! Do not flatter yourself!
Isabella: (Phineas is depressed that Danville has been branded naughty by Santa and is lying on a bed) So, what? Are you just going to stay here for the rest of your life?
Phineas: Why not?
Isabella: (scene zooms out, showing Phineas, Isabella, Ferb, Buford, and Baljeet in a mattress store) Isabella: Well, for one, the mall closes in 20 minutes.
Characters appearing in this episode without dialogue: Lawrence Fletcher, Suzy Johnson, Irving, the Fireside Girls, Meap. (The Chronicles of Meap), Stacy Hirano and Jenny (seen as background singers in the "What Does He Want?" song in the Extended Edition of this episode). And although Olivia Olson sings the songThat Christmas Feeling, her voice character Vanessa Doofenshmirtz does not appear in the episode.
This episode is a Christmas special.
This is the first episode of Phineas and Ferb to be 45 minutes long (including commercials).
Songs: Winter Vacation, What Does He Want? (seen in the Extended Edition of this episode) That Christmas Feeling, I Really Don't Hate Christmas, Where Did We Go Wrong, Danville for Niceness, Christmas is Starting Now, Thank You Santa.
USA for Africa: We Are the World
When it seems Danville won't be getting its Christmas, the kids organize its people to sing a benefit for the town which they call Danville for Niceness (or Santa, What Gives?), a slight play on the All-Star singers performing for the above-titled nation in the 1985.
In the song Where Did We Go Wrong the music, tempo, choreography, harmonies and lyrics are performed in a near copy of the song Where Do We Go from Here from Buffy the Vampire Slayer season 6 musical episode Once More, with Feeling.
During the That Christmas Feeling song, Ferb is seen swinging to hang up Christmas lights similarly to the superhero's web-slinging in his original 1967 animated series.
Frosty the Snowman
The snowman Perry brings to life is a reference to Frosty the Snowman.
The scene where all the kids were dancing in the end credits is an homage to A Charlie Brown Christmas.
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