Abruzzo made regular appearances in Dynasty (as police sergeant John Zorelli), The Practice (as Detective Michael McGuire); and The Sopranos (as "Little" Carmine Lupertazzi). He also played the part of Tony Guiliano, Christine Sullivan's fiancé, husband, and then ex-husband on the NBC-TV series Night Court.
Other television credits include a 1989 "Change Of Heart" episode of Empty Nest, where he played cardiologist Dr.Leonard, NCIS, Murder, She Wrote, L.A. Law, House M.D., NYPD Blue, Lois and Clark, Law & Order: SVU, The Nanny, CSI: NY, Criminal Minds, Bones, Weinerville (head writer, stage manager, and performed as the puppet chef Pops), In Plain Sight and Mad Men.
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