Guest Stars Courtney Thorne-Smith as Lyndsey Mackelroy Ryan Stiles as Dr. Herb Melnick Graham Patrick Martin as Eldridge Mackelroy Patton Oswalt as Billy Stanhope Richard Whiten as Sergeant Preston Co Starring Alem Brhan Sapp voices Drill Sergeant Chase Austin as Slacker #1 Ryan Heinke as Slacker #2