COMEDY CENTRAL GOES DARK TO COMMEMORATE THE LAUNCH OF COMEDY CENTRAL RADIO ON SIRIUSXM AT MIDNIGHT ET ON SUNDAY, MAY 19

COMEDY CENTRAL Radio Launches on SiriusXM Channel 95

24/7 Channel Dedicated to Stand-up Comedy from Today's Top Comedians and Tomorrow's Rising Stars

NEW YORK, May 15, 2013 - Listen up! To kick off the launch of COMEDY CENTRAL Radio, the #1 brand in comedy's exclusive 24/7 satellite channel on SiriusXM Radio (NASDAQ: SIRI), COMEDY CENTRAL(R), a wholly-owned unit of Viacom Inc. (NASDAQ: VIA and VIAB), will go dark and simulcast the audio feed of the historic launch, which goes live at midnight ET on Sunday, May 19. Virgin Mobile and Monster DNA(TM) headphones will sponsor the opening minute of COMEDY CENTRAL Radio on COMEDY CENTRAL, which marks only the second time that the channel has gone dark in its illustrious history, the first being May 22, 1992 when it did so for the entirety of Johnny Carson's final broadcast of "The Tonight Show."

COMEDY CENTRAL Radio (SiriusXM Channel 95) will provide fans an all-access pass to the world of stand-up featuring hundreds of hours of content from COMEDY CENTRAL's expansive and world-class library including stand-up series and specials, as well as performances from the "COMEDY CENTRAL Roast" franchise. In addition, COMEDY CENTRAL Radio will develop platform-exclusive original series and feature behind-the-scenes and backstage sat-casts from COMEDY CENTRAL events, simulcasts from COMEDY CENTRAL Certified clubs and exclusive hosted programming blocks from "guest DJ" comedians tied to new COMEDY CENTRAL series launches and stand-up premieres.

Select programming from COMEDY CENTRAL Radio will be available on SiriusXM On Demand after it airs for subscribers listening via the SiriusXM Internet Radio App for smartphones and other mobile devices or online at siriusxm.com. Visit www.siriusxm.com/ondemand for more info on SiriusXM On Demand.

COMEDY CENTRAL Radio joins SiriusXM's broad collection of comedy channels, including Blue Collar Comedy, Jamie Foxx's Foxxhole, George Carlin's Corner, Upright Citizens Brigade Radio, Raw Dog Comedy and more. For more information on SiriusXM, please visit www.siriusxm.com.

About Sirius XM Radio

Sirius XM Radio Inc. is the world's largest radio broadcaster measured by revenue and has 24.4 million subscribers. SiriusXM creates and broadcasts commercial-free music; premier sports talk and live events; comedy; news; exclusive talk and entertainment; and the most comprehensive Latin music, sports and talk programming in radio. SiriusXM is available in vehicles from every major car company in the U.S., from retailers nationwide, and online at siriusxm.com. SiriusXM programming is also available through the SiriusXM Internet Radio App for Android, Apple, and BlackBerry smartphones and other connected devices. SiriusXM also holds a minority interest in SiriusXM Canada which has more than 2 million subscribers.

On social media, join the SiriusXM community on Facebook (facebook.com/siriusxm), Twitter (twitter.com/siriusxm), Instagram (instagram.com/siriusxm) and YouTube (youtube.com/siriusxm).

About COMEDY CENTRAL

Available on-air, online and on-the-go, COMEDY CENTRAL (www.cc.com) is the #1 brand in comedy and is owned by, and is a registered trademark of, Comedy Partners, a wholly-owned unit of Viacom Inc. (NASDAQ: VIA and VIAB).