XM Satellite Radio To Launch National Lampoon® Comedy Radio Channel In October

Washington D.C., September 08, 2006 -- XM Satellite Radio, the nation’s leading satellite radio service with more than 7 million subscribers, and National Lampoon, the worlds most recognized brand in comedy, today announced the launch of “National Lampoon Comedy Radio,” a 24-hour comedy channel debuting on XM’s programming lineup in October.

With a stable of “comedy jocks” serving as on-air hosts, National Lampoon Comedy Radio (XM 154) will include a variety of original programming spanning from stand-up and satirical news and sports segments to parody songs and prank phone calls. The channel also will include character sketches regular interview features with comedian and celebrities.

“XM has been a champion of the comedy radio format, developing and growing our three existing comedy channels to become among the most popular on the platform. With the addition of National Lampoon Comedy Radio, we’ll be able to reinforce XM’s reputation as an innovator in comedy programming for a national radio audience,” said Eric Logan, executive vice president of programming for XM Satellite Radio.

“We look forward to joining and expanding XM’s powerful comedy line-up. XM’s clear dedication to the comedy space makes their service the ideal place for National Lampoon to reach passionate comedy fans,” said Kent Emmons, Chairman and CEO of National Lampoon Radio Networks.

A complete programming schedule for National Lampoon Radio, including show descriptions and times, will be available soon online at http://www.xmradio.com.

About XM Satellite Radio
XM (Nasdaq: XMSR) is America’s number one satellite radio service with more than 7 million subscribers. Broadcasting live daily from studios in Washington, DC, New York City, the Country Music Hall of Fame in Nashville, Toronto and Montreal, XM’s 2006 lineup includes more than 170 digital channels of choice from coast to coast: the most commercial-free music channels, sports, talk, comedy, children’s and entertainment programming; and the most advanced traffic and weather information.

XM, the leader in satellite-delivered entertainment and data services for the automobile market through partnerships with General Motors, Honda, Toyota, Hyundai, Nissan, Subaru, Suzuki and Porsche, is available in more than 140 different vehicle models for 2006. XM’s industry-leading products are available at consumer electronics retailers nationwide. For more information about XM hardware, programming and partnerships, please visit http://www.xmradio.com.
Factors that could cause actual results to differ materially from those in the forward-looking statements in this press release include demand for XM Satellite Radio’s service, the Company’s dependence on technology and third party vendors, its potential need for additional financing, as well as other risks described in XM Satellite Radio Holdings Inc.’s Form 10-K filed with the Securities and Exchange Commission on 3-9-06. Copies of the filing are available upon request from XM Radio’s Investor Relations Department.

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