Partial List of Past Participants

Abbott Laboratories
AgStar
Alcan Inc.
Allstate Insurance Company
American Airlines
Ameriprise Financial
Angelpoints
Apple Computer, Inc.
ARAMARK
Bank of America
Bayer Corporation
BellSouth Corporation
Best Buy Co., Inc.
Blue Cross Blue Shield of Massachusetts
BMW Manufacturing Co., LLC
Boston Scientific Corporation
BP America
Capital One Financial Services
Cartoon Network
CenterPoint Energy
Circuit City Stores, Inc.
Columbia College
Comcast Corporation
Constellation Energy
Coors Brewing Company
DuPont & Company
Exelon
Exxon Mobil Corporation
Fannie Mae
GE Foundation
Georgia-Pacific Corporation
GlaxoSmithKline
Hallmark Cards, Inc.
Hewlett-Packard Company
IBM Corporation
ING Americas
Intel Corporation
J. C. Penney Company, Inc.
Kaiser Permanente
Kraft Foods, Inc.
Land O' Lakes, Inc.
LaSalle Bank
Liberty Mutual Insurance Company
Mary Kay Inc.
Mercedes-Benz of North America, Inc.
Merck & Co., Inc.
Merril Lynch
Michelin North America, Inc.
MicroEdge
Microsoft Corporation
Nestle Purina PetCare Company
Pacific Life Insurance Company
PEPCO Holdings, Inc.
PepsiCo, Inc.
Pfizer Inc.
Philip Morris USA
Pitney Bowes Inc.
Shell Oil Company
St. Jude Medical, Inc.
Standards & Poor's Corporation
Stanford University Medical Center
Staples, Inc.
Starbucks Coffee Company
State Farm Insurance Companies
Target Corporation
The Boeing Company
The Hartford Financial Services Group
The Kroger Company
The McGraw-Hill Companies, Inc.
The Procter & Gamble Company
TIAA-CREF
Toyota Motor Sales U.S.A., Inc.
U.S. Chamber of Commerce
US Airways
Verizon Communications
Wachovia Corporation
Walgreen Co.
Washington Mutual Bank
Wells Fargo Bank
Whirlpool Corporation