Have Rosie O'Donnell's days of on-set politically-charged fights come to an end? The comedian, 45, became infamous for her brash bickering with colleagues on The View last year. But on the set of Nip/Tuck where she plays hypochondriac lotto-winner Dawn Budge ”O'Donnell is surprisingly silent. I'm amazed as how quiet she is on set," costar Dylan Walsh told Usmagazine.com at an autograph signing for the hit FX series in Hollywood October 25. "She was quieter than you would imagine. She listens to people." O'Donnell returns to to the latest season (which debuts October 30) "in a big way," costar Julian McMahon added. "She's fantastic."