“Sullivan & Son” is one of those half-hours manufactured from used material that has no reason to exist except as a vehicle for easy, predictable one-liners and hackneyed characters. The unambitious writers, including the show’s star, Steve Byrne, don’t try to reinvent their familiar ingredients. They just add a dollop of lard to a bunch of old beans and refry them to within an inch of their little oval lives.
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