William Hartnell, the first actor to play Doctor Who. He died over 35 years ago and there's not many of his signatures floating around.

Nice! I got a personalized one from Mark, as well, IP in 2007.

I have a few rare ones....

a mark wahlberg photo with an inscription "thanks brother god bless"
a hayden panettiere
a personalized photo from joey chestnut (nathans 4th of july eating champ)
all of these ttm

however my most rare one would have to be the the 1940 Boston College "Team of Destiny" game used team signed Sugar Bowl ball
it is signed by everyone on the team and since it was played on new years day it has the mistake of having the year as 1940...this was given to my relative because he was a well liked locker room attendant at the time...Boston College was undefeated this season

Mine would have to be Dave Coulier(Joey On Full House).. My Sister met Him a couple of Years ago, and She got his Autograph for Me! it was written on a piece of Paper!!!!!

Hmmm...my rarest autograph? Probably would have to be Scott McKenzie, who sang "San Francisco" in the 60's. I've never been able to find another autograph from him, other than the one I have. Also, Jack Keil - the voice of McGruff The Crime Dog. I would also say Imogen Heap (got VV last month) and Zooey Deschanel personalized IP in 2007. And Billy Mays - haven't seen too many of his autographs floating around.

i have patrick stewart twice and also
ronnie barker,
christopher lee
dawn french,
gordon brown
john guilgood
roger moore twice
{thumb2} {thumb2} the autograph king {thumb2} {thumb2}

I would have to say my Lucille Ball autograph. I am pretty sure it's a pre print sadly, but it's over 30 years old. Obviously she's passed away, and being a huge Lucy fan, I was excited to make a small donation to a site awhile back, and in exchange get it as my "thank you" from the owner of the site, who I had been exchanging e-mails with at the time.

Picture:
http://i25.tinypic.com/25his5z.jpg

I would have to say Jodie Foster via venue. They say she doesn't sign ttm, but I sent to her via venue and got one back signed ttm from her!

My rarest is either Eva Gabor - or Mickey Rooney- - the verdit is out on my Mickey Rooney- I got it via a venue- but a few people on this board say it wasn't signed by him- but probably his wife.

I've been trying to get Zsa Zsa Gabor's- just to have both "Gabor Sisters" autographs- but she is next to impossible to get- plus she's 91!! If I get her's- then that would be my rarest.