THX
Phineas and Ferb: The Movie: The DVD and Blu-ray have an unauthorized parody of the THX Tex trailers as an Easter egg like The Simpsons Movie, where Dr. Heinz Doofenshmirtz becomes annoyed by Tex and eventually smashes it, then Perry the Platypus flies in from off-camera. Because of this, an imitation of the "Deep Note" sound is used and the logo used in the original Tex trailer.