ABC cancels 'Roseanne' after star's racist Twitter rantABC canceled its hit sitcom "Roseanne" on Tuesday after the show's biggest star, Roseanne Barr, went on a racist Twitter rant.
Wanda Sykes quits 'Roseanne' before ABC cancels showUPDATE: ABC has canceled "Roseanne," according to a statement from the network's president Channing Dungey.