Name	Known for
Scott Baio Chachi Arcola Chachi Arcola See fewer	Superbabies: Baby Geniuses 2 (2004)
Erin Moran Joanie Cunningham Joanie Cunningham See fewer	Joanie Loves Chachi (1982)
Al Molinaro Al Delvecchio Al Delvecchio See fewer	The Odd Couple (1970)
Derrel Maury Mario Mastorelli Mario Mastorelli See fewer	Shadow of the Monarch (2017)
Ellen Travolta Louisa Arcola Delvecchio Louisa Arcola Delvecchio See fewer	Grease (1978)
Winifred Freedman Annette Mastorelli Annette Mastorelli See fewer	Evolution (2001)
Robert Pierce Bingo (as Robert Peirce) Bingo (as Robert Peirce) See fewer	Suburbicon (2017)
Susan Cotton Linda Linda See fewer	The Incredible Hulk (1977)
Grant Heslov Mark Mark See fewer	Argo (2012)
Art Metrano Uncle Rico Mastorelli (credit only) Uncle Rico Mastorelli (credit only) See fewer	Police Academy 3: Back in Training (1986)
Henry Winkler Arthur 'Fonzie' Fonzarelli Arthur 'Fonzie' Fonzarelli See fewer	The Waterboy (1998)