Famous INTPs:

Joe Butt
Socrates
Rene Descartes
Blaise Pascal
Sir Isaac Newton
U.S. Presidents: 
     James Madison
     John Quincy Adams
     John Tyler
     Dwight D. Eisenhower
     Gerald Ford
William Harvey (pioneer in human physiology)
C. G. Jung, (Freudian defector, author of _Psychological Types_, &c.)
William James
Albert Einstein
Tom Foley (Speaker of the House--U.S. House of Representatives)
Henry Mancini
Bob Newhart
Jeff Bingaman, U.S. Senator (D.--NM)
Rick Moranis (_Honey, I Shrunk The Kids_)
Meryl Streep
Brent Spiner (Commander Data, "Star Trek -- The Next Generation")
Midori Ito (ice skater, Olympic silver medalist)
Tom and Fiona (_Three Weddings and a Funeral_)
+Dr. Susan Lewis (_ER_)