Doctor Who is the BBC's longest lasting Sci-Fi Drama. Revived in 2005, the new incarnation will continue through at least 2010. Ongoing on BBC One and BBC HD:
A) 4 Specials in 2009/2010 starring David Tennant (Doctor #10):
1 around Easter - first one made in HD (Planet Of The Dead, already aired)
1 November-ish - The Waters Of Mars (already aired)
Christmas Day - The End Of Time, Part One
New Years Day - The End Of Time, Part Two
B) Series 5 in 2010 - 13 Episodes starring Matt Smith (new Doctor #11)

Doctor Who has spawned two spinoff series - "Torchwood", an adult drama about a military group investigating alien activies, and "The Sarah Jane Adventures", the continuing story of 70s companion Sarah Jane Smith. "Torchwood" aired a third series in July and is believed to have a 4th series on the way. "The Sarah Jane Adventures" aired Series 3 (12 episodes) late in 2009 on BBC One and CBBC.

"K-9" is in production by another company featuring former Doctor Who companion K9. K-9 will air on Disney XD in the UK and various countries, and on Network Ten in Australia. Most episodes will air in 2010.

TWIDW seeks to be the weekly resource detailing where new and old episodes of Doctor Who, Sarah Jane Adventures, and K9 are airing worldwide.

See the Torchwood group - home of "Torchwood This Week", a spinoff of TWIDW - at http://groups.yahoo.com/group/torchwood . A place to discuss all aspects of Torchwood.

Other websites to look out for:
Outpost Gallifrey - http://www.gallifreyone.com
BBC's Doctor Who site - http://www.bbc.co.uk/doctorwho