"Ferb, I know what we're gonna do today!"
"Hey, where's Perry?"
"Hey, Phineas! Whatcha doooin'?"
"Behold! The (fill in the blank)-inator!"
"Curse you, Perry the Platypus!!"
Doofenshmirtz (after being defeated by Perry)
"You look like number 1!"
->"I feel like number 2."
Candace and her boss
Candace, after her brothers' latest invention disappears.
"Aren't you a little too young to (fill-in-the-blank)?"
"Yes. Yes we are."
"Ooh, and extra points for recycling! The girls' score is now the square root of pi, while the boys still have a crudely drawn picture of a duck. Clearly, it's still anyone's game!"
Phineas, "Got Game?"
"Did you ever have an old box of junk that's been sitting in the attic forever, and you think, 'I bet I could just get rid of this whole box, and my life would go on completely unaffected by the loss of whatever would be inside'? Like, for instance, an old forgotten video tape, made in high school? Look in the box, Perry the Platypus. Always. Look. In. The box."
Doofenshmirtz, "Tip of the Day"