The band Simple Plan is strongly connected to What 's New, Scooby - Doo?. They perform the theme song (written by Rich Dickerson), and appeared as themselves in the episode "Simple Plan and the Invisible Madman ''. Two of their songs appeared in chase scenes: "I 'd Do Anything '' in the episode "It 's Mean, It 's Green, It 's the Mystery Machine '' and "You Do n't Mean Anything '' in "Simple Plan and the Invisible Madman '', which also had the song "The Worst Day Ever '' serve as the song the band plays during a scene where they practice, and a scene where they are in concert. Also, they contributed to the theatrical movie Scooby - Doo 2: Monsters Unleashed.
who wrote the what's new scooby doo theme song
Rich Dickerson