Like a phoenix, NBC has risen from the ashes of the past and reclaimed the top spot ... for now.

According to the network, it was tops in the 18-49 demographic for premiere week, averaging a 2.9 rating. Fox came in at No. 2 with a 2.6. This is the first time NBC has come out on top since 2003 when the network still had power players such as "ER," "Will & Grace," "Friends" and "The West Wing."

So what's the key to NBC's success? All signs point to "The Voice." The singing competition series has been crushing it in the 18-49 demographic, usually pulling in at least a 4 rating. The Monday, October 1 outing of "The Voice" had 12.3 million viewers and a 4.5 rating. As a lead-in, "The Voice" series has been helping new drama "Revolution" perform solidly. NBC says it's the No. 1 new series (in the demographic). The most recent episode of "Revolution" had 8.4 million viewers and a 3.2 rating.

On Tuesdays, "The Voice" has also been helping "Go On," Matthew Perry's new sitcom. The Tuesday, September 25 episode of "Go On" had a 2.7 rating and 6.9 million viewers.

According to NBC, it's the only network among ABC, CBS, NBC and Fox that is up versus last year's premiere week in total viewers and the 18-49 demographic.

However, it's not all good news for the Peacock network. Some of its new fall shows haven't been performing as well as "Revolution." The Wednesday, September 26 episode of "Animal Practice" had 5.2 million viewers and a low 1.4 rating. "Guys With Kids" came in even lower with 4.8 million viewers, but a 1.6 rating.

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  • 1600 Penn

    Benjamin Stockham as Xander, Martha MacIsaac as Becca (seated), Bill Pullman as President Dale Gilchrist (seated), Amara Miller as Marigold, Josh Gad as Skip, Jenna Elfman as Emily Gilchrist (seated), Andre Holland as Marshall Malloy

  • 1600 Penn

    Amara Miller as Marigold; Jenna Elfman as First Lady Emily Gilchrist; Bill Pullman as President Dale Gilchrist; Martha MacIsaac as Becca; Josh Gad as Skip; Benjamin Stockham as Xander

  • Go On

    Allison Miller as Carrie, Khary Payton as Don, Suzy Nakamura as Yolanda, Matthew Perry as Ryan, Laura Benanti as Lauren, Julie White as Anne

  • Go On

    Matthew Perry as Ryan King

  • Revolution

    Tracy Spiridakos as Charlie, Anna Lise Phillips as Maggie , Zak Orth as Aaron

  • Revolution

    JD Pardo as Nate, Tracy Spiridakos as Charlie, Zak Orth as Aaron, Anna Lise Phillips as Maggie

  • Revolution

    Billy Burke as Miles

  • Revolution

    Anna Lise Phillips as Maggie, Graham Rogers as Danny, Tim Guiee as Ben, David Lyons as Bass Monroe, Billy Burke as Miles, Tracy Spiridakos as Charlie, Andrea Roth as Rachel, Maria Howell as Grace, JD Pardo as Nate, Zak Orth as Aaron, Giancarlo Esposito as Lt. Neville

  • The New Normal

    Ellen Barkin as Jane, Andrew Rannells as Bryan, Georgia King as Goldie, Bebe Wood as Shania, Justin Bartha as David

  • The New Normal

    Bebe Wood as Shania; Andrew Rannells as Bryan; Justin Bartha as David; Georgia King as Goldie

  • The New Normal

    Andrew Rannells as Bryan, Ellen Barkin as Jane, Nene Leakes as Rocky

  • Save Me

    Anne Heche as Beth

  • Save Me

    Anne Heche as Beth Waring

  • Save Me

    Heather Burns as Jenna, Alexandra Breckenridge as Carly, Michael Landes as Tom Waring, Anne Heche as Beth Waring, Madison Davenport as Emily Waring, Lamman Rucker as John

  • Chicago Fire

    Teri Reeves as Hallie, David Eigenberg as Christopher Hermann, Charlie Barnett as Peter Mills, Lauren German as Leslie Shay, Monica Raymund as Gabriella Dawson, Taylor Kinney as Kelly Severide, Jesse Spencer as Matthew Casey, Eamonn Walker as Battalion Chief Walter Boden and Merle Dandridge as Kay Fitori

  • Deception

    Meagan Good as Joanna Locasto

  • Deception

    Meagan Good as Joanna Locasto

  • Deception

    Meagan Good as Joanna Locasto, Victor Garber as Robert Bowers

  • Deception

    Victor Garber as Robert Bowers, Meagan Good as Joanna Locasto, Katherine LaNasa as Sofia Bowers, Tate Donovan as Edward Bowers, Laz Alonso as Will Moreno

  • Guys With Kids

    Anthony Anderson as Gary, Tempestt Bledsoe as Marny

  • Guys With Kids

    Anthony Anderson as Gary, Jesse Bradford as Chris, Zach Cregger as Nick

  • Guys With Kids

    Jamie Lynn Sigler as Emily, Zach Cregger as Nick, Tempestt Bledsoe as Marny, Anthony Anderson as Gary, Sara Rue as Sheila, Jesse Bradford as Chris

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