Deliberate mistake: A witness during the murder trial says she was home watching "Boston Public." That series was also created by David E. Kelley, but takes place in the same fictional reality as "The Practice," as evidenced by the two series having a two-part crossover earlier in the season in which Ellenor defended a coach from being fired.
The Practice (1997)
1 mistake in Public Servants
Starring: Dylan McDermott, Steve Harris, Camryn Manheim, Michael Badalucco
Lucy: My mother told me two things before she died. One was never let somebody push you around just because they're bigger or richer.
Ellenor: What was the other thing she told you?
Lucy: If you're ever in an argument, you can always trump with a dead mother.
Trivia: Camryn Manheim uses sign language with her client, played by Marlee Matlin. Before becoming an actress, Camryn Manheim actually worked as a sign language interpreter and job trainer/placement specialist for the deaf. She also used her sign language skills in an episode of "Law and Order" called "Benevolence," where she portrayed a defense attorney for a deaf man accused of murdering his girlfriend.