CBS TO PARTICIPATE IN COMCAST'S ON DEMAND ONLINE NATIONWIDE TRIAL

As the First Broadcaster to Participate, CBS Agrees to Test Standards and Principles for �TV Everywhere� Model

NEW YORK and PHILADELPHIA, July 14, 2009 � CBS Corporation (NYSE: CBS.A) and Comcast Corporation (Nasdaq: CMCSA, CMCSK) announced today that CBS is the first broadcast network to participate in Comcast's technical trial of On Demand Online. The new service will significantly expand the number of top-rated TV shows available online and across platforms at no additional charge to Comcast's cable customers while delivering increased advertising value to content owners. During the course of the trial, CBS plans to test various types of current and library content.

"CBS and Comcast share the same vision of giving consumers more � more content, in more places," said Matt Bond, Executive Vice President of Content Acquisition, Comcast Cable. "On Demand Online is a major step in extending consumers' television experiences online, and ultimately across platforms by giving any television network, including top brands like CBS, the ability to make their content available on the Web."

"CBS is very supportive of initiatives that help extend our content to new platforms in such a way that we gain new audiences and additional value for our advertisers," said Quincy Smith, Chief Executive Officer, CBS Interactive. "Comcast is already a trusted platform to distribute CBS content on air as well as on demand; expanding this relationship online is a logical step. In addition, CBS's strategy has always been about open, non-exclusive distribution of our content in a consumer friendly way, which is a core tenant of TV Everywhere and On Demand Online."

CBS's participation in Comcast's technical trial comes on the heels of last month's joint announcement between Time Warner Inc. and Comcast which introduced a set of principles called �TV Everywhere.� Developed by the two companies, the principles are designed to serve as a framework to facilitate deployment of online television content in a way that is consumer friendly and pro-competitive.

Comcast will begin its technical trial of On Demand Online with approximately 5,000 customers from across the U.S. in the coming weeks � the first national trial of its kind. A major focus of the trial is to test Comcast's new �authentication� technology, which will allow Comcast customers to receive the same content online for free that they subscribe to on TV. The service will utilize a simple log-on system for streaming content and, in the future, will allow for download content to go. The On Demand Online service will roll-out in phases, adding new features, functionality and content over time to provide consumers with a new way to watch television.

On Demand Online is part of Comcast's Project Infinity, the company's long-term vision to give customers an ever growing amount of video content on multiple platforms, whenever they want.

About Comcast Corporation

Comcast Corporation (Nasdaq: CMCSA, CMCSK) (www.comcast.com) is the nation's leading provider of entertainment, information and communication products and services. With 24.1 million cable customers, 15.3 million high-speed Internet customers, and 6.8 million Comcast Digital Voice customers, Comcast is principally involved in the development, management and operation of cable systems and in the delivery of programming content.

Comcast's content networks and investments include E! Entertainment Television, Style Network, Golf Channel, VERSUS, G4, PBS KIDS Sprout, TV One, ten sports networks operated by Comcast Sports Group and Comcast Interactive Media, which develops and operates Comcast's Internet businesses, including Comcast.net (www.comcast.net). Comcast also has a majority ownership in Comcast-Spectacor, whose major holdings include the Philadelphia Flyers NHL hockey team, the Philadelphia 76ers NBA basketball team and two large multipurpose arenas in Philadelphia.

About CBS Corporation

CBS Corporation is a mass media company with constituent parts that reach back to the beginnings of the broadcast industry, as well as newer businesses that operate on the leading edge of the media industry. The Company, through its many and varied operations, combines broad reach with well-positioned local businesses, all of which provide it with an extensive distribution network by which it serves audiences and advertisers in all 50 states and key international markets. It has operations in virtually every field of media and entertainment, including broadcast television (CBS and The CW - a joint venture between CBS and Warner Bros. Entertainment), cable television (Showtime Networks and CBS College Sports Network), local television (CBS Television Stations), television production and syndication (CBS Television Studios and CBS Television Distribution), radio (CBS Radio), advertising on out-of-home media (CBS Outdoor), publishing (Simon & Schuster), interactive media (CBS Interactive), music (CBS Records), licensing and merchandising (CBS Consumer Products), video/DVD (CBS Home Entertainment) and motion pictures (CBS Films). For more information, log on to www.cbscorporation.com.