Overview:The episode began with never-before-seen audition clips. Then, Cat introduced us to this week's judges: Nigel Lithgoe, Mary Murphy and Dan Karaty, and we saw Lil' perform with his crew.This week's pairs danced together:Ryan and Heidi danced hip-hop, Travis and Martha performed a salsa routine, Dmitry and Ashlee performed contemporary, Musa and Natalie danced a disco routine, Benji and Donyelle performed the Vienesse Waltz, Ivan and Allison danced the West Coast Swing and Jaymz and Jessica danced hip-hop.Afterwards, voting was opened up to the audience.