18. Mystery (2009)

Biz Markie (Biz's Beat of the Day) Jack McBrayer & Paul Scheer (Knock Knock Joke of the Day) Ladytron (Super Music Friends Show) "Some Things Are A Mystery" Animation by PUNY Music by Autolux "The Missing Mooky Mooky Boo Boo Towel" Animation by Wildbrain Directed by Gordon Clark Written by Dan Clark Narration by Emily Mavromates

Release date: 2009-10-16