Prinze will appear on at least two episodes of the new legal drama as Donny Crane, son of Shatner's character, quirky lawyer Denny Crane, Zap2it.com reported Thursday.
Prinze's character operates a low profile suburban legal practice, but inherited his father's unconventional courtroom brilliance, Zap2it.com said.
"Boston Legal" premieres Oct. 3.
Ohio bar shooting arrested, charged with murder
LGBT community has 'bullied the American people': Bachmann