BBC America announced another airdate for the last of David Tennant's Doctor Who specials today: "The End of Time, Part One" airs at 9 p.m. ET/PT on Dec. 26, followed by part two at a date to be announced soon.

Following is a sneak-peek clip from the special, after which you can read the full official announcement.

DOCTOR WHO FINAL TWO SPECIALS BEGIN DECEMBER 26 ON BBC AMERICA

-Exclusive sneak peeks now available at BBCAmerica.com/DoctorWho-

The finale to the era of David Tennant as the Tenth Doctor, is one of the most eagerly anticipated adventures in the history of Doctor Who. As previously announced, the next special, Doctor Who: The Waters of Mars premieres Saturday December 19, 9:00pm ET/PT on BBC AMERICA. The final two specials, Doctor Who: The End of Time, Part One and Doctor Who: The End of Time, Part Two, will premiere over the holiday season starting December 26 on BBC AMERICA. Guest stars John Simm, Timothy Dalton, Catherine Tate, Lindsay Duncan and Bernard Cribbins join Tennant on his final journey. Doctor Who: The End of Time, Part One premieres Saturday December 26, 9:00pm ET/PT on BBC AMERICA. The End of Time, Part Two premiere date will be announced very soon.

BBCAmerica.com/DoctorWho has exclusive Doctor Who clips including a sneak peek to The Waters of Mars, which The Times says is "a big-budget, knock-yer-socks-off blockbuster" and the Guardian exclaimed "it's a belter, a watery nightmare - scary, moving, relevant, believable."

The site also has a new world premiere clip from The End of Time, Part One, with never-before seen footage that will keep fans all over the globe wondering what's in store for the Doctor.

This slick re-imagination of Doctor Who, created by Russell T Davies (Torchwood, Queer as Folk), puts a fresh spin on the adventures of the iconic Time Lord and his feisty companions - who travel across the universe to protect Earth from dangerous aliens and terrifying monsters. Davies and Tennant are passing the baton to Steven Moffat and actor Matt Smith, who will play the Eleventh Doctor in a new season of the re-imagined series premiering in 2010 on BBC AMERICA.

The BBC will release The Waters of Mars and The End of Time, Part One and Part Two on DVD and Blu-ray, Tuesday, February 2, 2010. A 5-disc set, Doctor Who: Specials Collection, which includes The Next Doctor, Planet of the Dead, Waters of Mars, The End of Time, Part One and Part Two and a 16-page booklet with an introduction written by David Tennant, hits stores the same day.

Doctor Who photos are available now at www.press.bbcamerica.com

BBC AMERICA brings audiences a new generation of award-winning television featuring news with a uniquely global perspective, provocative dramas, razor-sharp comedies, life-changing makeovers and a whole new world of nonfiction. BBC AMERICA pushes the boundaries to deliver high quality, highly addictive and eminently watchable programming to viewers who demand more. It is available on digital cable and satellite TV in more than 65 million homes.

For up-to-the-minute information on BBC AMERICA, forthcoming U.S. premieres, art work and newsfrom the channel, log on to www.press.bbcamerica.com


THE WATERS OF MARS - SYNOPSIS

Lindsay Duncan (Alice and Wonderland, Rome) joins the Doctor as his sharpest and most strong-minded companion yet for the second of four Doctor Who Specials. The Waters of Mars is a dark, scary thriller that sees the Doctor land on the planet Mars, at a base in peril. A creeping infection beneath the Martian surface threatens not only the human race, but also the Doctor's most fundamental beliefs. Together with Adelaide Brooke (Lindsay Duncan), the base's commander, the Doctor must defeat a seemingly unstoppable menace before it can reach Earth, and wipe out mankind. The Doctor must fight not only the water but destiny itself... while also confronting his own existence, when the prophesy about his future begins to resonate. Is his song about to come to an end? The Waters of Mars is written by Russell T Davies (Torchwood, Queer as Folk) and Phil Ford and directed by Graeme Harper. The executive producers are Russell T Davies and Julie Gardner (Torchwood, Life on Mars).


BIOS

DAVID TENNANT - THE DOCTOR

David Tennant is an accomplished theater actor who most recently starred onstage in Hamlet with the Royal Shakespeare Company. Before landing the role of The Doctor in Doctor Who, he played the title role in Russell T Davies' adaptation of Casanova alongside Peter O'Toole. He also played Briscoe in The Quatermass Experiment, the sci-fi cult classic first broadcast live in 1953. Other stage work includes The Pillowman at the National Theatre and Royal Shakespeare Company productions of Romeo & Juliet and As You Like It. His movie roles include Stephen Fry's Bright Young Things and the role of Barty Crouch Jr. in Harry Potter And The Goblet Of Fire. Tennant is the new host of PBS' Masterpiece Contemporary and recently signed on to appear in the NBC pilot Rex Is Not Your Lawyer.

RUSSELL T DAVIES - LEAD WRITER AND EXECUTIVE PRODUCER
Russell started at BBC Children's, writing the fantasy thrillers Dark Season and Century Falls, before winning the BAFTA for Best Children's Drama in 1996 for Granada's The Ward. He then created the landmark series Queer As Folk for Channel 4, and the U.S. version ran on Showtime for five years. Since then, he has written Bob & Rose - for which he won Comedy Writer of the Year 2001 - The Second Coming, Mine All Mine and Casanova, starring David Tennant. He reinvented and reinvigorated Doctor Who for the BBC in 2005, winning both the Dennis Potter Award and the BAFTA for Best Drama. He has created the Doctor Who spin-off series Torchwood and The Sarah Jane Adventures, both now entering their third successful season.