Ned Beatty as Grandpa

Shelley Winters as Rita

Neil Patrick Harris as Billy Johnson

Peggy Lipton as Mom

Chubby Checker as Chubby Checker

Little Richard as Mayor

James Houghton as Dad

Thora Birch as Molly Johnson

John Brumfield as Mr. Noodle

Molly Cheek as Mrs. Orfus

Sheb Wooley as Harvey Skitters

Shonda Whipple as Allison

Lindsay Price as Kory Kamimoto

Kimberly McCullough as Donna Orfus

Linda Shayne as Nurse

Dustin Diamond as Big Z

Nikki Cox as Purplette Dancer