Judd Hirsch (born March 15, 1935) is an American actor most known for playing Alex Rieger on the television comedy series, Taxi, and Alan Eppes on the CBS series Numb3rs.

In "Blind Ambition", Peter Griffin, Glenn Quagmire, Cleveland Brown, and Mort Goldman are at the bowling alley when Peter looks into the bowling ball returner to see what's down there. While looking he encounters Hirsch, who is working on some sort of hazardous missile. Peter asks Hirsch what he is doing down there, but Hirsch simply replies with a nonchalant "nothing." Later, they learned he was supplying the Keebler elves with weapons for use in their assault on the Rice Krispies guys.