Sorry it took so long... I started this back in August!
Okay, here's the list... Over 120 actors (and a few directors acting), all linked Kevin-Bacon-style!
The names of actors and movies link to IMDB's credits and cast respectively. No pictures, as this would just clutter everything. Click the link, or do a Google or Wikipedia search.
Bold names denote Oscar winners or nominees. Actors for main or supporting, movies for best picture or nominees.
[The list is not chronological... I started with Bill Pullman and worked outwards. So if it seems that I'm avoiding certain obvious links, it's because they were used elsewhere. Don't worry... your favorites will appear. If not, mention my omission in the comments, and I'll try to work them in later.]
Paul L. Smith
Ray Walston
Christine Ebersole
John Laroquette
Christopher Lloyd
Huey Lewis
Peter Coyote
Drew Barrymore
Art Carney
Danny DeVito
Michelle Pfeiffer
Peter O'Toole
Faye Dunaway
Robert Duvall
Donald Pleasence
Edmund O'Brien
Tommy Kirk [A member of the Disney bRat Pack, plays a Martian in...]
Buster Keaton
Vincent Price
Anthony Michael Hall
Michael Caine [a proto-Kevin Bacon]
Nicole Kidman
Daniel Craig
Tom Hanks
Clint Howard
Wilfred Bromley
Kurt Russell [Another Rat Packer]
Cesar Romero
Burgess Meredith
Bill Murray
Ernie Hudson
Michael Ironside
Sharon Stone
Halle Barry
Bryan Singer [No. Really.]
Ron Perlman
Joanna Lumley [Check out THIS.]
Peter Cushing
Kenny Baker
Val Kilmer
Marlon Brando
Marc McClure
Dick Van Patten
Charlton Heston (Only nominated once, but won for Ben-Hur)
Roddy McDowall
[Oh, crap... got Roddy McDowall confused with Malcolm McDowell!]
[Man... it took some work, but I got it done!]
David Tomlinson
Buddy Hackett
Alfre Woodard
Helen Mirren [Also a Dame Commander of the Order of the British Empire]
Alan Rickman
Sigourney Weaver
John Hurt
Bill Pullman
Jeff Goldblum [The first multiple link between actors.]
Geena Davis
Michael Keaton
Jack Nicholson
Natalie Portman
Liam Neeson
Gary Oldman
Bruce Willis
Samuel L. Jackson
Mary Steenburgen
Leah Thompson
Tim Robbins
Tom Cruise
Tom Curry
Susan Sarandon
James Marsden
Ray Park
Rachel Nichols
Eric Bana
Jennifer Connelly
David Bowie
Rip Torn
Tommy Lee Jones
Rene Auberjonois
Christian Slater
Kirsten Dunst
Robin Williams
Dustin Hoffman
Jason Bateman
Will Smith
Salma Hayek
George Clooney
Arnold Schwarzenegger
Arnold Stang
Robert Strauss
Jerry Lewis [My favorite link on this entire list. Wish I could have linked Valerie Harper.]
James Brolin [also in Fantastic Voyage]
Majel Barrett [She rivals Leonard Nimoy and Mark Lenard for the most variations of Star Trek.]
William Shatner
Lloyd Bridges
[Crap... had a direct link to Anjelica Huston, but it doesn't exist. Took some work... but here's the patch.]
Rick Moranis
Steve Martin
Richard Pryor [You could take a shortcut and use Carol Kane to link to Ms. Huston. Here's the scenic route:]
Michael Jackson [Yup, can link to Ms. Huston via Captain EO... patience.]
Barry Sonnenfeld
Anjelica Huston
Billy Barty
Courtney Cox
Tim Allen
Peter Boyle
Rosario Dawson
Stan Lee
Tobey Maguire
Don Knotts
Leslie Nielsen
Robbie the Robot [He plays himself in Forbidden Planet, but since this is a fictional movie, not a documentary, and a major role, it counts.]
Chuck Jones [Yes! My second favorite link on this list.]
Henry Gibson
Christopher Lee
Johnny Depp [Betcha you thought I forgot him, didn'tcha?]
Ian Holm
Sean Connery
John Rhys-Davies
Cate Blanchett
Harrison Ford
And thus ends the initial list. Why end it at Harrison Ford? Because once I got going, and found it approaching 122 names, I decided to link all of the Batman movies. Luckily, I was able to splice in the last Batman movie (actually the first) via Kurt Russell, although I had to sacrifice a double (Kurt Russell + John Carpenter = The Thing + Escape From New York) as well as Jamie Lee Curtis (EFNY/Buckaroo Banzai) and John Lithgow (Banzai/Twilight Zone). Actually, it would be slick to link Buckaroo Banzai and its sequel, Big Trouble in Little China via Kurt Russell and Jamie Lee Curtis.
Any corrections, comments, suggestions, criticisms... let me know.