Beyonce and Oprah

HBO's documentary on singer Beyoncé Knowles, Beyoncé: Life Is But a Dream, drew 1.8 million total viewers for its 9 p.m. premiere on Saturday. That made it the net's most-viewed documentary since 2004, when Nielsen changed its audience measurement methods for HBO. The previous high was the Spike Lee miniseries about Hurricane Katrina, When the Levees Broke: A Requiem In Four Acts (Acts 1&2), which averaged 1.7 million viewers back in 2006.