After a week of teases on GMA, ABC finally aired Diane Sawyer's full interview with Rihanna on 20/20 last night, and it actually lives up to the hype in terms of candor. Rihanna didn't deflect any of Sawyer's questions, even the tough ones, and comes across as someone who is doing this not as a publicity stunt but truly to help other victims of domestic violence. The fact that she refuses to totally rule out ever getting back together with Chris Brown might be seen as a dangerous message, but b....

