Derpy Cameo: She can be seen in the crowd of angry ponies outside of Twilight's library
Fancy Pants, from the episode "Sweet and Elite," can be seen in the crowd of ponies when the Pinkie clones start arguing over which one of them is the real Pinkie Pie.
Rainbow Dash can be seen reading a "Daring Doo" book while she's sunbathing.
Pinkie Clone: Two fun things, at once? But which, which? Oh, can't decide. (Starts to breathe heavily) Trouble breathing! Walls closing in!
Fluttershy: Walls? But we're outside.
Applejack : How in tarnation are we suppose to tell which is the real Pinkie?
Twilight: I have no idea.
Pinkie Pie : Me either. We've all got the same adorable tails. We've all got the same adorable manes. We've all got the same adorable hooves. Which one of us is the real Pinkie?
Applejack : I wanna know right now where all you Pinkies came from so I can find out who's responsible for y'all ruining our barn raise.
Twilight: Hi Pinkie Pie. We were thinking we should go out and celebrate.
Applejack: You up for some wheel barrel races?
Rainbow Dash: Or I could take everpony on a cloud ride.
Rarity: I could throw a party with punch and zesty cucumber sandwiches.
Pinkie Pie : You wanna know exactly what I feel like doing right now? (She falls flat on her back and starts snoring)
Fluttershy: That looks like fun.
This is the Pinkie Pie themed episode on the DVD A Pony For All Seasons.
Friendship Report: Pinkie Pie learned that having lots of friends means that you have to choose who you spend your time with and that good friends will give you lots of opportunities to have fun.
This episode revolves around Pinkie Pie.
This episode was released on iTunes just a few hours before it aired on the Hub.
One of the Pinkie clones makes a crazy face that makes her look like one of the ponies from the G3 series of My Little Pony.