Phineas and Ferb - Doppelganger Candace
In the episode "Last Train to Bustville", look closely during the song. In the part after the boxer but during the soldiers, in between the artist and the daredevil. There is a quick flash of orange. If you pause at the right time, Candace will be there with her eyes closed and her left knee bent. This is kind of hard to catch because it comes and goes VERY fast.
Episode "Last Train to Bustville"