Fans of Doctor Who will be sad to know that David Tennant, the man who currently plays the central character of the BBC series, will be leaving the role before the new season begins two years from now.  The 37-year-old actor, who also appeared on the big screen with Harry Potter and the Goblet of Fire, confirmed that he won’t be returning to the show for its next season.

"When 'Doctor Who' returns in 2010 it won't be with me," Tennant, who won the outstanding drama performance prize at the National Television Awards, announced after receiving the award.

Torchwood fans, get ready for a money-can't-buy-experience!  Supporters of the hit series science fiction series are being offered an opportunity to go behind the scenes at the BBC studio where Torchwood is being filmed.  The once-in-a-lifetime chance has been set on Saturday and Sunday, November 8 and 9 as the network opens its doors just outside Cardiff to 100 lucky competition winners and their friends and families.

In addition to Torchwood, BBC is offering this rare break to fans of Doctor Who and The Sarah Jane Adventures.

The Doctor Who reboot on the Sci-Fi channel wraps up its fourth season tonight at 7:30pm and, if spoilers are to be believed, this finale entitled Journey's End does a good job of bringing closure not just to this season but to the past three as well (as some described it, seasons 1 to 4 is one gigantic season).

In Journey's End, the Daleks are able to activate their master plan, which, of course, endangers the rest of the universe.  The only thing that can prevent such from happening is if the Doctor's secret army of companions join the battle.  There's a catch: a prophecy says one of them will die.  Now the question is who.

Just as time is the medium of choice for David Tennant's character as the Time Lord in BBC/SCI FI's Doctor Who, a vision of the adventure-filled series' future has prompted current executive producer/head writer Russell T. Davies to announce he is passing on the torch.  Come 2010, when Doctor Who leaps into its fifth season, Steven Moffat will step in to run the show.

Davies, credited as the force that effectively resuscitated and revived the sci-fi series in 2005, has decided to step down after 2009, in what he's suggested is in the best interest of the show.

Every day, we here at BuddyTV will let you know all the new shows airing that night to help you plan your TV-viewing schedule. In addition, we’ll highlight two episodes we think are worth checking out to help diversify your love of TV.

This is going to be a big sci-fi weekend. Friday night Doctor Who returns for its fourth season premiere and Saturday brings the second season finale of Who spin-off Torchwood. Then on Sunday, celebrate with the craziest family on TV as the Walkers return with brand new episode of Brothers and Sisters.

Doctor Who fans will get a double treat this spring: not only is the SCI-FI Channel premiering the fourth season of the long-running sci-fi dramedy, but launching its new spin-off, The Sarah Jane Adventures, as well.

Come April, David Tennant will once again give life to the tenth timelord of Doctor Who, but this time, with a new companion. Comedienne-actress Catherine Tate will reprise her role as Donna Noble, the runaway bride from the previous season's Christmas episode.  The doctor's former companion, Martha Jones, played by Freema Agyeman, will return in the middle of the season.