Tennant and Billie Piper, who played his on-screen companion Rose Tyler, are among those who will guest star.
Bush matched this effort by appearing as a guest star at carefully chosen fund raisers in key states.
Chris Klein ("Wilfred") has been tapped to guest star in an episode.
After a hugely-successful London run, the production is heading out Stateside in the spring, complete with its tried-and-tested formula of incorporating a mystery guest star every night.
Fabrice Muamba is to guest star on a Christmas edition of Strictly Come Dancing, nine months after he suffered a cardiac arrest during an FA Cup tie.
But the biggest guest star for this tech audience may have been Microsoft CEO Steve Ballmer, who ran out on stage to giddily show off three new Windows 8 products.
ConnecTV's SocialTV Timeline also puts front and center "guest star" chat with stars from hit programs "Pretty Little Liars, " "Dancing With the Stars, " and "X-Factor, " as well as Super Bowl and Heisman Trophy-winning sports celebrities.
ENGADGET: ConnecTV adds SocialTV Timeline for mobile, puts chats with stars on a second screen
As part of the deal for him to guest star in Smallville, the WB Network, which broadcasts the series, will run a public service announcement at the end of the episode for the Christopher Reeve Paralysis Foundation.
Joe Biden yes, the very guy who was re-elected Vice President of the United States will guest-star in the Nov. 15 installment of Parks and Recreation, EW has learned.
CNN: Vice President Joe Biden to guest on 'Parks and Recreation'
LONDON, England (CNN) -- Nelson Mandela, the indomitable anti-apartheid campaigner who emerged from decades of imprisonment to lead his country into a new era, will this week be joined audience of thousands and a star-studded guest list to mark his 90th birthday.
He frequently invites chef friends to take over his restaurant Harry's Pizzeria for a night, and twice in the last six months, shrimp toast has taken a star turn on guest's menus once from Gabrielle Hamilton of Prune in New York, and again from Jonathan Sawyer of Cleveland's Greenhouse Tavern.
The result is an all-star cast of guest artists on Dark Night, including The Shins' James Mercer (who most recently worked with Danger Mouse on the Broken Bells album), Julian Casablancas of The Strokes and Iggy Pop, each of whom offers his own interpretation of the Danger Mouse and Sparklehorse songs.
Given recent history, authorities might want to look at the guest lists of various four-star hotels in Pakistan.
After Christmas of that year, Tyner brought an all-star trio and special guest Joe Lovano to the New Year's Eve broadcast of NPR's Toast of the Nation at Yoshi's in Oakland, Calif.
He was also the guest at a Milliennium Stadium concert with Hollywood star Catherine Zeta Jones and singer Dame Shirley Bassey and Katherine Jenkins.
Another treat is the mystery celebrity guest, on this occasion The Royle Family star Sue Johnston, a consummate professional who is brought in to star in McColl's play and is sent up at every opportunity.
He sat on a dais, where he was joined by his wife, the former singer Ri Sol-ju, and, a few moments later, an unlikely guest of honor: the onetime Chicago Bulls star and cross-dresser Dennis Rodman.
He is editor-at-large of the Daily Star newspaper in Beirut and a frequent guest on this program.
He is the latest in a long list of big names, inlcuding fellow singer Charlotte Church, Full Monty star Mark Addy and David McCallum, to have guest starred in the series.
It is not the star's first visit to Downing Street - he was a guest of Tony Blair's on 26 June 2007, Mr Blair's last full day as prime minister.
The Aqua Star Pool, the largest heated pool in Beverly Hills, is surrounded by cabana guest rooms for easy access to the Southern California sunshine.
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