  scott vincent james baio (; born september 22, 1960 ) is an american actor and television director, best known for his roles as chachi arcola on the sitcom happy days and its spin-off joanie loves chachi, the titular character on the sitcom charles in charge and the main character in the musical bugsy malone. he is also known for his role as dr. jack stewart in the medical-mystery-drama series diagnosis: murder. baio has also appeared in various television programs as a guest star, several independent films, and currently stars on the nick at nite sitcom see dad run. ==career== in 1976, baio played the title character bugsy malone in the cult childrenâs gangster musical directed by alan parker, which also co-starred jodie foster. baio and foster later worked together again in the teen girl drama foxes (1980), helmed by adrian lyne. when he was 16, baio was then cast as the fonz's cousin chachi arcola on happy days. during his time on happy days, baio earned two emmy award nominations for his lead performances in the television movies stoned (1981) and all the kids do it (1985). he won two young artist awards during the third annual youth in film awards (1980â1981) as best young actor in a television special for stoned and best young comedian in television or motion pictures for happy days. he also starred in the made-for-television youth drama specials the boy who drank too much with lance kerwin and senior trip with mickey rooney. in 1982, baio was in a spin-off of happy days entitled joanie loves chachi with erin moran, which lasted 17 episodes. that same year, he appeared opposite another actor, willie aames, in the film zapped!, and recorded an album for rca (he also recorded a second album the boys are out tonight the following year). during this same period, he also starred with danny aiello and undertook the lead role of francis geminiani in the special hbo cable television presentation of "gemini", an adaptation of the broadway comedy-dra
1960_births 20th-century_American_male_actors 21st-century_American_male_actors American_male_child_actors American_male_film_actors American_male_television_actors American_people_of_Italian_descent American_television_directors California_Republicans Living_people Male_actors_from_New_York_City Participants_in_American_reality_television_series People_from_Brooklyn Xaverian_High_School_alumni