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Besides playing Al Capone, William also played another real life mobster, Sammy "the Bull" Gravano, in the 1996 TV movie Gotti.
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William played notorious Chicago gangster Al Capone in the 1993-94 revival series of The Untouchables.
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William has an extensive and noted career in theatre, on and off Broadway.
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William is best known equally for playing bad guys as well as hard-nosed cops on television and in film.
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William appeared as himself in the documentary The Revenge of the Dead Indians (1993).
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William appeared in the documentary Dick Tracy: Behind the Badge, Behind the Scenes (1990).
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William made his major motion picture debut in the film Long Shot (1980).
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William was the Executive Producer for the film Paradise Lost (1999).
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William was the Co-Producer of the film Big City Blues (1999).
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William was the Executive Producer for the film Beyond Desire (1996).
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William was the Producer for the film The Last Letter (2004).
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William worked as a writer on the film The Librarians (2004).
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William's first television appearance was in the TV-movie The Miracle of Kathy Miller.
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William's breakthrough appearance was in the film Once Upon a Time in America (1984).
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William's birthday falls under the Year of the Ram.
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In 1993, William was nominated Independent Spirit Award for Best Supporting Male for: The Waterdance (1992).
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William's first acting appearance was in the title role of Julius Ceasar at a school production.
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William was in the alternate ending for Scary Movie 3 (2003) as Cindy's psychiatrist, but was left on the cutting room floor. (The scene is featured on the DVD.)
