'20/20' is #1, Best A18-34 Rating in 3 Years

ABC was #1 last in the A18-49 demo thanks in part to the ABC News magazine "20/20."

Last night's show featured several reports on the Ft. Hood massacre as well as Diane Sawyer's interview with Rihanna, speaking for the first time about being attacked by her then-boyfriend, singer Chris Brown last February.

"20/20" won its time period in Total Viewers (8.2M) and A18-49 (2.7 rating/9 share). The Elizabeth Vargas-hosted show was also Friday's #1 TV show across each of the key

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