This year marks the 10th anniversary of Edgar Wright's Shaun of the Dead, and so far, fans of the "Rom-Zom-Com" have enjoyed nuggets of nostalgia, such as the unveiling of the "Garden Zombie" photo and Mondo's vinyl release of the film's soundtrack, and now Simon Pegg and Nick Frost have reprised their respective roles as Shaun and Ed in the Halloween special of Disney's Phineas and Ferb animated series.
Cameo clip via IGN: