Mr Bighead William Shatner (never authentic TTM) Tom Jones (authentic) Tom Baker.

Leslie Phillips. George lazanby. Willie Nelson. Michael Nasmith (The Monkees) Russell Crowe.
Olivia De Havalland. Olivia Newton John. Prince. Scott Walker (The Walker Brothers) David Bowie. Tony Banks (Genesis) any of the royal family. And Loads more.

good topic! either Bruce Willis, Natalie Portman, or Metallica

Erin Daniels, Leisha Hailey, Jennifer Beals, Laurel Holloman, Mia Kirshner. Basically the entire L Word cast. Strangely enough I've had a success from the one person I thought would NEVER sign which was Katherine Moennig. But the rest of the cast I'm almost totally positive DOES NOT sign TTM. Which is really sad....But I'm not giving up hope yet. I think I'll try writing them all again in like a week or so.

Robbie Williams
Bob Geldof

James

I'd say:

Ellen Johnson-Sirleaf
Oprah Winfrey
Yvon Neptune
Ellen DeGeneres
Dolly Parton
Luna Vachon (at least for me)
Alyson Stoner
Paul Butcher
Lily Tomlin
Betty Ford
Cole & Dylan Sprouse
Miep Gies
Bob Dylan
Aretha Franklin
Star Jones
Meryl Streep
and Cher

For me it would be:
Johnny depp,
Arnold Vosloo
Joaquin Phoenix
Wes Craven

and also a lot others

I've been after these names for the longest time. I've sent a minimum of 4 letters to each person. I don't believe in buying autographs, so I continue to try them TTM or in the very rare event In Person.

Axl Rose
Christopher Walken
Martin Scorsese
Quinten Tarantino
Pamela Anderson
Rainn Wilson (I realize some people have been successful, I ust have not)
Steve Carell (same as above)
Jill Hennessy
Jery O'Connell
Ghost Hunters Cast
Howard Stern
Victoria Gotti
George Jung
Gene Simmons of Kiss
Paul McCartney
Dr. Dre
Snoop Dogg

And authentics of these know AP, PP, or Sec. senders:
Johnny Depp
Keifer Sutherland
Marge Halgenberger-CSI
Adam West
Katey Segal
Muhamad Ali

Shirley Temple Black - She stopped signing due to ebay
A personalised photo of Bette Davis - Obviously that's not going to happen lol!

William H. Macy
Christopher Walken
Oprah Winfrey
Ethel Kennedy
Bruce Springsteen
Jon Bon Jovi

I'd love authentics from:
James Marsden
Paul Bettany
Gael Garcia Bernal
Jake Gyllenhaal
Milo Ventimiglia