The BBC have announced that Catharine Tate will be reprising her role as Donna Noble and will be joining Doctor Who as the Doctor's new permanent companion.
Catharine says: 'I am delighted to be returning to Doctor Who. I had a blast last Christmas and I look forward to travelling through time and space with that nice man from Gallifrey.'
Freema Agyeman will be returning as Martha Jones half way through the series and will be joining the Doctor and Donna on their travels.

I got this off David-Tennant.com

The Doctor
Empty Child
Robot Spider
Coffa
Chained Dalek
The Editor
Gelth Ambassador [Blue]
Adam Mitchell
Gwyneth [Bridging The Rift]
Slitheen [Blon Fel Fotch Pasameer-Day]
Mr Pakoo
Mickey Smith
Anne Droid
Hnery Van Statten
Jackie Tyler
Charles Dickens
Hovering Dalek
Auton Bride
Nurse Zombie [Inactive]
Harriet Jones MP
Face Of Boe
Scholar
Dr Constantine
Lynda Moss
Oliver Charles
Nancy
Margaret Blaine
Cathica Santini Khadeni
[Cassandra's] Surgeon 1
[Emperor Dalek] Guard 1
Child Auton
Pete Tyler
Pig Pilot
Simmons
Mrs Peace [Zombie]
Platform One Staff
Gelth Ambassador [Red]
Rose Tyler
Gwyneth
Jabe
Auton Mickey
Captain Jack
Dalek Mutant
Mr Sneed [Zombie]
General Asquith
[Male] Programmer
Reaper
Raffalo
Joseph Green
Spider Group
Controller [Under Dalek Control]
Damaged Dalek
Jagrafess [Of The Holy Hadrojassic Maxarodenfoe]
[Cassandra's] Surgeon 2
Suki Macrae Cantrell [Eva Saint Julienne]
Cassandra [O'Brian Dot Delta Seventeen]
The Steward
[Female] Programmer
Nestene Consciousness
Moxx Of Balhoon
Nurse Zombie
Controller [Free Of Dalek Control]
Lute
Male Auton
Mrs Pakoo
Female Chula Zombie
Sycorax
Dalek
Cal Macnannovich
Slitheen [Sip Fel Fotch Pasameer-Day]
Dalek Emperor

More Coming Soon When I Can Be Bovvered 2 Put Them On Here Lol!

1. Whats your Name?
2. Are we close?
3. What do you think of me?
4. Do you hav a crush on me?
5. Would u kiss me?
6. would u fuk me?
7. Describe me in 3 words?
8. If u Had Me for 30 Mins wat would you do?
9. What was ur first impression of me?
10. Do u still think the same?
11. What reminds u of me?
12. If you could give me anything what would it be?
13. How well do u know me?
14. What do u like best about me?
15. Ever wanted 2 tell me something u could'nt?
16. Could you ever love me?
17. Give me a nickname and explain why?
18.R u gona put this on ur blog and c wat i say bout u?
19. would you go out with me?
20. do you think im good lookin?
21.are we friends?
22.anything you want to say before you go
23.wud u give me ur moblie no?