well, to be politically correct, here are all the current people running.
AMERICAN PARTY: 
  Diane Templin (California)
Presidential Nominee
Al Moore (Virginia)
Vice Presidential Nominee
 
  CONSTITUTION PARTY: 
  Michael Peroutka (Maryland)
Presidential Nominee
Chuck Baldwin (Florida)
Vice Presidential Nominee
 
GREEN PARTY: 
  David Cobb (California)
Presidential Nominee
Pat LaMarche (Maine)
Vice Presidential Nominee
 
LIBERTARIAN PARTY: 
  Michael Badnarik (Texas)
Presidential Nominee
Richard Campagna (Iowa)
Vice Presidential Nominee
 
PEACE & FREEDOM PARTY: 
   Leonard Peltier (Kansas) +
Presidential Nominee
Barry Bachrach (Massachusetts) +
Vice Presidential Nominee
PERSONAL CHOICE PARTY: 
  Charles Jay (Indiana)
Presidential Nominee
Marilyn Chambers Taylor (California)
Vice Presidential Nominee
 
PROHIBITION PARTY: 
  Gene Amondson (Alaska) 
Presidential Nominee
Leroy Pletten (Michigan)
Vice Presidential Nominee
 
REFORM PARTY / INDEPENDENT:  
  Ralph Nader (I-Connecticut)
Presidential Nominee
Peter M. Camejo (Green-California)
Vice Presidential Nominee 
SOCIALIST PARTY USA:  
  Walt Brown (Oregon)
Presidential Nominee
Mary Alice Herbert (Vermont)
Vice Presidential Nominee 
SOCIALIST EQUALITY PARTY: 
  Bill Van Auken (New York)
Presidential Nominee
Jim Lawrence (Ohio)
Vice Presidential Nominee 
SOCIALIST WORKERS PARTY: 
  Róger Calero (New York)
Presidential Nominee
Arrin Hawkins (New York)
Vice Presidential Nominee  
WORKERS WORLD PARTY: 
  John Parker (California)
Presidential Nominee
Teresa Gutierrez (New York)
Vice Presidential Nominee 
and here are all the write-ins
A.J. Albritton (American Republican Party-Mississippi) *
Sterling Allan (Providential Party-Utah) *
Stanford "Andy" Andress (I-Colorado) *
Joe Bellis (America's Party-Kansas) *
Kenneth M. Bonnell (I-Mississippi) *
Harry Braun (I-Arizona) *
Fred Cook (I-Georgia) *
Eric J. Davis (Michigan) *
Robert DiGiulio (Children's Party-Vermont) *
Bob Dorn (Washington) *
Lonnie D. Frank (I-California) *
John Galt Jr. (I-Pensylvania) *
Jack Grimes (United Fascist Union-Pennsylvania) *
Michael Halpin (I-New York) *
Larry D. Hines (I-Texas) *
Georgia Hough (I-Georgia) *
Keith Judd (I-Massachusetts) *
Darren E. Karr (Party X-Oregon) *
Samuel Keegan (I-Rhode Island) *
Joseph Martyniuk Jr. (I-Illinois) *
David Mevis (I-Mississippi) *
Muadin (E-Democratic Party-Massachusetts) *
Jeffrey Peters (We The People Party-New Hampshire)
Andrew M. Rotramel (I-Texas) *
Joseph "Average Joe" Schriner (I-Ohio) *
Dennis P. Slatton (United America Party-North Carolina) *
Dan Snow (I-Texas) *
Brian B. Springfield (I-Virginia) *
Lawrence Rey Topham (I-Utah) *
Lemuel Tucker (I-Michigan) *
Da Vid (Light Party-California) *
Tom Wells (Family Values Party-Florida) *
A.J. Wildman (I-Virginia) *
If You want to check out any of these people, I've compiled this list from 
http://www.politics1.com/p2004.htm