If its Marvel Super Heroes, Star Wars or Lost-themed episodes haven't drawn you in, maybe this will: this week's Phineas & Ferb takes on the zombie genre with a guest appearance from none other than Simon Pegg and Nick Frost, recreating their characters from Shaun of the Dead. And you can watch it here!

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This isn't the only cameo in the episode, titled "Night of the Living Pharmacist"; zombie godfather George Romero will also have a vocal cameo. The episode airs this Saturday evening at 8:00 p.m. on Disney XD.

[Via IGN]