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.
Wisconsin business offering 'therapeutic cuddling' forced to close
Britney Spears talks pregnancy sex, lip injections and Kim Kardashian