Guest Stars Josh Zuckerman as Leo Donwell Matt Letscher as Dr. Mike Lasker Lorenzo James Henrie as Justin Montavo Marco Sanchez as Dave Montavo Leighton Meester as Heather Crowley Julie St. Claire as Renee Montavo Jeremy Sumpter as Zach Griffith Jowharah Jones as Amelia Clarke Co Starring Sarah Bloom as Party Planner Larisa Miller as Kimberly Crowley Brad Bartram as Edward Crowley