Toonin' To Go Doofin' (or Spot the Doof in the UK) is a Phineas and Ferb marathon which aired on July 23, 2011 as part of Disney Channel's Saturday morning "Toonin" lineup. It consisted of four episodes of Phineas and Ferb modified to feature numerous appearances by Dr. Doofenshmirtz hidden in the background as well as the debut of a new "Take Two with Phineas and Ferb" featuring David Beckham. The Disney XD version was called Spot the Doof. It is a parody of Spot the Diff. Another marathon aired on Disney XD on January 14, 2012 which had the same episodes aired.