From:  
http://explore.georgetown.edu/documents/?DocumentID=740
Georgetown University graduates go on to be leaders in a variety of career fields.  Alumni hold leadership posts in academia, the arts, business, government, legal, medical, and non-profit sectors throughout the world.  A sample of alumni successes include:
Law, Government, and Politics
    * William Jefferson Clinton (SFS'68) - former President of the United States 
(Alpha Phi Omega!)
    * Antonin Scalia (C'57) - Supreme Court justice
    * George Tenet (SFS'76) - director of Central Intelligence
    * Michael Powell (L'93) - chairman, Federal Communications Commission
    * Gen. James Jones (F'66) - supreme allied commander, Europe, North American Treaty Organization
    * William McDonough (G'62) - former president and CEO, Federal Reserve Bank of N.Y.; Chairman, Public Company Accounting Oversight Board
    * Mark Morial (L'83) - former mayor of New Orleans 
(Alpha Phi Alpha!)
    * Scott Thomas (L'77) - commissioner, Federal Elections Commission 
    * Andrew Natsios, (C'71) - administrator, U.S. Agency for International Development
    * Gloria Macapagal Arroyo (SFS'68) - president of the Philippines
    * Thomas Ambro (C'72, L'75) - Judge, United States Court of Appeals
    * Franklin L. Lavin (SFS'79, G'85) - Ambassador to Singapore
    * George Mitchell (L'61) - former majority leader, U.S. Senate
    * Mickey Kantor (L'68) - former secretary of Commerce
    * Alfredo Cristiani (B'68) - former president of El Salvador
Congress
    * Sen. Patrick Leahy (L'64) - D-VT
    * Sen. Richard Durbin (SFS'66; L'78) - D-IL
    * Sen. Lisa Murkowski (C'80) - R-AK 
    * Rep. Michael Castle (L'64) - R-DE
    * Rep. John Dingell (C'49, L'52) - D-MI
    * Rep. Lane Evans (L'78) - D-IL
    * Rep. Mike Ferguson (MPP'95) - R-NJ  
    * Rep. Martin Frost (L'70) - D-TX
    * Rep. Steny Hoyer (L'66) - D-MD
    * Rep. Henry Hyde (C'47) - R-IL
    * Rep. William Jefferson (L'96) - D-LA
    * Rep. Mark Steven Kirk (L'92) - R-IL 
    * Rep. Charlie Norwood (DDS'69) - R-GA
    * Rep. Peter Visclosky (L'82) - D-IN
    * Rep. Frank Wolf (L'65) - R-VA
    * Rep. Albert Wynn (L'77) - D-MD 
Business
    * Ted Leonsis (C'77) - vice chairman, America Online and President, AOL Core Services; majority owner, Washington Capitals hockey team
    * Philip Marineau (C'68) - president and CEO, Levi Strauss & Co.
    * Marcus Wallenberg (SFS'80) - president and CEO, Investor AB
    * Robert Emmett McDonough (F'49) - founder and vice chairman, Remedy Temp, Inc.
    * Edmond Villani (C'68) - vice chairman, Deutsche Asset Management
    * Nicholas Forstmann (B'69) - partner, Forstmann Little and Company
    * Ken "Dr. Fad" Hakuta (B'72) - inventor and CEO, Allherb.com Foundation 
(Wow I didn't know Dr. Fad was a Hoya!  That's the Wacky Wall Walker guy!)
    * Jules Kroll (L'66) - president, Kroll-O'Gara Company
    * Paul Nussbaum (L'71) - president, Patriot American Corporation
Entertainment, Media and Culture
    * Stuart Bloomberg (C'72) - chairman, ABC Entertainment
    * Jonathan Nolan (C'98) - author of "Memento"
    * Linda Gradstein (SFS'85) - correspondent, National Public Radio (NPR)
    * William Peter Blatty (C'50) - author of "The Exorcist"
    * John Guare (C'60; H'91) - author and playwright
    * Margaret Edson (G'92) - Pulitzer Prize winning author of "Wit"
    * Maria Shriver (C'77) - first lady of California; best selling author
    * Malcolm Lee (C'92) - director, "The Best Man" and "Undercover Brother"
And Spike Lee's cousin!
    * Greta Van Susteren (L'79, L'82) - anchorwoman, Fox News Network
Science and Medicine
    * Antonia Novello (Hospital fellow '75) - physician, former U.S. Surgeon General
    * John J. Ring (C'49; M'53) - former president, American Medical Association
    * Solomon Snyder (C'59, M'62) - neuroscientist
Religion, Social Action and Education
    * Leo J. O'Donovan, S.J. (C'56) - 47th president, Georgetown University
    * Joan Claybrook (L'73) - president, Public Citizen
    * Robert M. Hayes (C'74) - founder, Coalition for the Homeless
    * Rev. Daniel K. Lahart, S.J., president of Strake Jesuit College Preparatory School, Houston, TX (B '83)
    * Rev. Brian Paulson, S.J., president of St. Ignatius College Preparatory School, Chicago, IL (SFS '81)
    * Anthony Shriver (C'88) - founder and chairman, Best Buddies International
    * Most Rev. Thomas J. Rodi, Bishop, Diocese of Biloxi, MS (C '71)
    * Sister Kathleen Ross, SNJM, founding President, Heritage College, Yakima, WA (G '71)
    * Rev. John Whitney, S.J., (C'80) - provincial of the Oregon Province of the Society of Jesus
Sports
    * Paul Tagliabue (C'62) - commissioner, National Football League
    * Patrick Ewing (C'85) - assistant basketball coach, Houston Rockets
    * Othella Harrington (C'96) - professional basketball player, New York Knicks
    * Dikembe Mutombo (SLL'91) - professional basketball player, New York Knicks
      Don Reid (C'95) - professional basketball player, Detroit Pistons
    * Jerome Williams (C'96) - professional basketball player, Chicago Bulls
    * Jaren Jackson (B'89) - professional basketball player, Orlando Magic
    * Jahidi White (C'98) - professional basketball player, Phoenix Suns
    * Ruben Boumtje Boumtje (C'01) - professional basketball player, Cleveland Cavaliers
C - College
SFS - School of Foreign Service
B - Business
SLL- School of Language and Linguistics
G - Graduate School of Arts and Sciences
L - Law Center
M - School of Medicine
DDS - Dental School
SSCE - School of Summer and Continuing Education
May 12, 2004 
ALSO:
Amerie, CAS '00 (R&B Singer)
Allen Iverson (did not graduate)