This was the eighth episode of season two to air in the UK, on 15th January, 2007. (edit) Jake can now make decoys of himself by releasing his chi.
(edit) Dante Basco plays multiple roles as the original Jake and the Jake doppelgangers, including Yang Jake. (edit) Olivia Mears (seen in Fu and Tell) is mentioned in this episode. (edit) Apparently, Rotwood is now the principal of Millard Fillmore Middle School. (edit) Credits: Spud comments on the thought of having his own set of doppelgangers. (edit) Dragon Training Secret 209: Many Hands Make A Lighter Load (edit)

Trixie: I'm gonna go ahead and take a wild guess on this one... we've been double dutching with your double. Right?
Jake: Yup, but you have to admit, this guy has some fly moves.
Doppelganger Jake: I jump rope, there for I am. (edit) Doppelganger Jake: Wanna jump rope?
Brad: The only jumping I'm gonna do is on your face with my fist. Which, isn't jumping, but it's still gonna hurt! (edit) Fu: No kid, this is a negative chi amplifier, if you make a doppelganger with this stuff it's guaranteed to be 100 percent pure evil!
Jake: An evil body attached to this pretty face, that's just wrong! (edit) Jake: One of us has to show up and meet Brad tomorrow. We can't use any dragon powers, we're gonna have to face him straight up. So, I'm lookin' for a volunteer. (Jake's doubles all whistle, trying not to get picked) All come on! One of us has to represent tomorrow. Now who's it gonna be!! (One of the doppelgangers raises it's hand.) Now that's what I'm talkin' about! My man here, isn't afraid of Brad!
Doppelganer Jake: Uh...I'm terrified of Brad. No way I'm going.
Jake: But...you raised your hand.
Doppelganger Jake: To suggest you create another doppelganger that's designed specifically for this task.
Jake: Hmm...Jake Long I like the way you think.
(edit) (The real Jake trips over the kitchen floor after it was just mopped)
Evil Jake: Clean up, isle 10! Ha ha ha ha!! (edit) Spud: Hmm...how do we know that this one is the real Jake Long, and not the other one?
Jake: Spud, trust me.
Spud: I could trust you, or you can tell me what my favorite possession is?
Jake: A ball of belly button lint you've been collecting since you were three.
Spud: Ewkk, that's disgusting! And also correct! So I'm choosing to believe you for now, but I'll be keeping my eye on you. (edit) Jake: (Talking to his doppelganger) Okay, I'll take the sleeping, you'll take the garbage. I'll take the napping, you'll take the alegbra.
Doppelganger Jake: Alegbra! Awwww man!
Jake: Wow, you really are my double. (edit) Haley: I'm at a developmental age where I need a lot of one-on-one attention! (edit) Yang Jake: Not quite, I still have one Jake left to absorb.
Jake: Oh, and which Jake is that?
Yang Jake: The original. (edit)

When Yang Jake dragons up, he surrounds himself with a fire aura, rather than a blue aura, just as the real Jake did in Season 1. (edit) The numerical address of Grandpa's shop, 10048, was the zip code of the World Trade Center. In memoriam (edit)

Jake learns the power of duplication in this episode. This is also a power "Danny Phantom" is practicing. (edit) The PMA, the Peronal Magical Assistant is an allusion the PDA. (edit)