Who's tougher? Barbra Streisand or Rosie O'Donnell? Looks like that crown goes to Rosie. Streisand, promoting her new album, "A Love Like Ours," is scheduled to appear on Rosie's talk show today, and Rosie suggested they sing together, New York's Daily News reports. Barbra declined doing a duet, but O'Donnell reportedly stood firm -- and the two will be seen performing "People." Check to see which one of them is smiling.