Whether she’s singing on stage or sitting down for an interview, Rihanna knows how to draw an audience. Her emotional 20/20 interview with Diane Sawyer scored the best demos of the night.

8pm

• Law & Order (8 million, 1.8/6 in 18-49) picked up 1 million.
• Ghost Whisperer (7.9 million, 1.8/6) fell by 800,000.
• Supernanny (4.8 million, 1.3/4) remained steady.
• House* (3.9 million, 1.2/4) was up slightly.
• Smallville (2.8 million, 1.2/4) added on 200,000.

9pm

• The second hour of Law & Order (8.4 million, 1.9/6) did better than the first.
• Medium (7.6 million, 1.8/6) was down by 100,000.
• Ugly Betty (4.8 million, 1.3/4) raised 300,000.
• Bones* (1.2/4) turned in 4.1 million.
• America’s Next Top Model* (1.2 million, 0.5/2) shaved off 100,000.

10pm

• 20/20 (8.2 million, 2.7/9 in 18-49) hit a season high with the 18-49s.
• Numb3rs (8.1 million, 1.8/6) improved by 400,000.
• The Jay Leno Show (4.6 million, 1.2/4) slid by 500,000.

*denotes repeat

(You can review last Friday’s ratings here.)