NBC joins ABC, CNN, MSNBC and E! Entertainment in offering the ceremony live. It's set for 10 a.m. PDT (1700 GMT) Tuesday at Los Angeles' Staples Center.
NBC had initially planned only a one-hour prime-time special on Tuesday night, but said Sunday it would also cover the event live. It was not immediately clear who would anchor.
Charles Gibson will anchor coverage for ABC, which is setting aside its typical daytime programming.
CNN has seen its ratings soar with the Jackson story, and it will show the memorial on the main network and HLN (formerly Headline News). CNN International will air the ceremony to the rest of the world. Anderson Cooper, Larry King and Don Lemon are the anchors for CNN coverage. Robin Meade, A.J. Hammer and Jane Velez-Mitchell will anchor at HLN. CNN en Espanol also will cover it.
Chris Jansing will anchor live coverage of the memorial on MSNBC. Fox News Channel hadn't announced its plans.
E! Entertainment will cover the ceremony on its television network and its Web site.
Fans kept guessing about "Jackson 4" reunion
Dec 4, 2009 2:00 pm PST
Michael Jackson's death put a sudden end to long-rumored plans for a Jackson 5 reunion, but brother Jermaine on Friday kept fans guessing about whether there might be a "Jackson 4" concert next year. "Those plans are in the works but ...
Jackson's `This Is It' out on DVD in January
Nov 30, 2009 10:00 am PST
"Michael Jackson's This Is It," a film about the King of Pop's final rehearsals before his death, will be released on DVD on Jan. 26, 2010. The DVD release was announced Monday by Sony Pictures Home Entertainment. "This Is It" captures J...
Jackson's doctor returns to his Houston clinic
Nov 23, 2009 1:00 pm PST
Michael Jackson's doctor returned to work at his Houston medical clinic on Monday for the first time since the pop star's death and his patients welcomed him back without reservation. Dr. Conrad Murray was greeted by several patients and ...
LA official negotiating over Jackson memorial cost
Nov 23, 2009 1:00 pm PST
A Los Angeles official says she's negotiating with the company that owns Staples Center about reimbursing at least some of the $3.2 million taxpayers spent on the Michael Jackson memorial. A City Council panel postponed Monday's cost revi...
Michael Jackson 'Opus' book offers rare images
Nov 23, 2009 5:00 am PST
Artist Nate Giorgio recalls the last time he saw Michael Jackson, just days before the singer's death. The pop icon wanted Giorgio to create dazzling murals of his children as well as artwork for his "This Is It" concerts, and Giorgio got...