Phineas and Ferb Season 1 Episode 15 I Scream, You Scream ( Air Date 2008-02-17 ) Genre Animation, Comedy, Family, Sci-Fi & Fantasy category. Overview "Phineas and Ferb make the biggest ice cream maker for Isabella after her tonsils are taken out. Doofenshmirtz's daughter, Vanessa, spends the day at his lair and tries to convince his ex-wife that he's evil.".