The Monster of Phineas-n-Ferbenstein

"The Monster of Phineas-n-Ferbenstein" is the 40th broadcast episode of the animated television series Phineas and Ferb. The episode revolves around Phineas Flynn and his step-brother, Ferb Fletcher, being told the story of how their Victorian ancestor helped a scientist create a monster. Meanwhile, Perry the Platypus is told a similar yet connected story concerning Dr. Heinz Doofenshmirtz's Victorian ancestor, who transformed himself into a monster.

Written by Martin Olson and Jon Colton Barry, "The Monster of Phineas-n-Ferbenstein" was directed by Zac Moncrief. Malcolm McDowell guest stars as Ferb's grandfather Reginald Fletcher, who had appeared earlier in the season in "A Hard Day's Knight" and "The Flying Fishmonger" along with Ferb's grandmother Winifred Fletcher (voiced by Jane Carr). It originally aired on Disney Channel on October 17, 2008. The episode received generally positive reviews and was nominated for the Emmy Award for "Outstanding Special Class – Short-format Animated Programs" in 2008, but the award was never given out.