Rollercoaster (Phineas and Ferb)

"Rollercoaster"
Phineas and Ferb episode
Promotional artwork for the episode detailing Phineas and Ferb building their roller coaster.
Episode no.	Season 1 Episode 1
Directed by	Dan Povenmire
Written by	Jeff "Swampy" Marsh Dan Povenmire
Featured music	"Perry"[1][a]
Production code	101a
Original air date	August 17, 2007 (2007-08-17)
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"Rollercoaster" is the series premiere of the American animated musical-comedy television series Phineas and Ferb. The episode was originally broadcast on Disney Channel in the United States on August 17, 2007 as a preview of the series. The episode follows the series' protagonists, Phineas and Ferb, as they bulid an extremely large roller coaster starting in their backyard and going throughout the city. In a subplot, the protagonists' pet platypus Perry is a "secret agent" codenamed Agent P who is assigned the mission to investigate the plans of an evil but silly scientist named Dr. Heinz Doofenshmirtz.

Series' creators Dan Povenmire and Jeff "Swampy" Marsh wrote "Rollercoaster", the former of whom also directed the episode. The two used the episode to pitch the series to Disney. They recorded a set of storyboard reels, which Povenmire voiced over and sent them overseas. When originally aired on August 17, 2007, "Rollercoaster" peaked high ratings in several categories, leading to the episode being the second highest-rated telecast Disney Channel received in its recorded history. The preview garnered a recorded amount of 10.8 million viewers. In 2011, the episode was remade into a half-hour musical episode titled "Rollercoaster: The Musical!".

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