Goof: When Phineas left the exosuit to save Isabella,, it looks like he's still in it when Ferb operates it to save the crowd from the falling billboard, as the lower portion of his face can be seen at the top.
While discussing the safety of the skatetrack obstacle course of doom, Phineas addresses Ferb as "Ferb-houche" (Ferb-hooch). This may be what Ferb's name is short for, as nearly mentioned in the episode Vanessasary Roughness.
Goof: When Khaka Peü Peü first confronts the Beak, he introduces himself by saying "You can call me Khaka Peü Peü". However, his lip movement doesn't match the words when he says "You can call me..."
(Phineas and Ferb have just revealed their selves as the Beak. Linda comes out of eye doctors' wearing dark glasses)
Candace: Mom! Did you see that? Did ya? Did ya? Did ya?
Linda: Um, no. The optometrist just dilated my pupils. Everything's actually just a big, blurry blob at the moment. But get me! (using an accent to imitate Arnold Schwarzenegger's Terminator) I'll be back!
Khaka Peü Peü and his wife are voiced by Ben Stiller and Christine Taylor, respectively, who are husband and wife in real life. Strangely though, Mrs. Khaka Peü Peü is not actually seen in this episode, only her voice is heard.
Songs: Skate Track and The Beak.
This is the first episode in which Ferb and Doofenshmirtz are seen together. Like in Chez Platypus, this occurs when the latter comes into the scene as Phineas and Ferb are walking out.