Hugh Laurie
Matt Smith plays the Eleventh Doctor in Series 5
There are lots of soundtracks! If you meant the theme tune, it doesn't have a name - other than the Doctor Who theme tune. But all of the recent background music is available on separate CDs: Doctor Who Series 1&2 Soundtack (2005/06 series) Doctor Who Series 3 Soundtrack (2007 series) Doctor Who Series 4 Soundtrack (2008 series) Doctor Who Series 4: The Specials Soundtrack (2008-10 specials) Doctor Who Series 5 Soundtrack (2010 Series) Doctor Who Series 6 Soundtrack (2011 Series) These feature the background music found in the respective series.
Matt Smith
Freema Agyeman plays Martha Jones.
Doctor Andrew Brown is from the Television Series - Everwood. Treat Williams plays Doctor Brown, who is a widower with two children who has relocated from Manhattan to Everwood, Colorado. This series is about Doctor Brown and his family and their adjustment to a small town.
series 8 and 9 are Peter Capaldi
In the British science fiction television series Doctor Who Katarina was played by Adrienne Hill. She was the first companion of the Doctor to die on screen.
Eoghan McDermott plays "Pete" from the 2008 TV series "Seacht"
Billie Piper is a British actress that plays Rose in the T.V series Doctor Who.
The actor who plays the 10th Doctor's real name is David Tennant. However, if you mean what is the name of the Doctor himself, nobody knows his actual name.
Billie Piper plays Rose in two full series, and appears briefly in most episodes of the fourth series with Donna Noble played by Catherine Tate.