Allscripts Healthcare Solution
Alterian, Inc.

American Academy of Pediatrics

Ampac Flexibles

Argonne National Laboratory

Assurance Agency, Ltd.

Atwell-Hicks

Banco Popular North America

BDO Seidman LLP

Carol Stream Public Library

Centers for New Horizons

Chicago Mercantile Exchange

Clear! Blue

Comprehensive Therapeutics, Ltd.

Cosi, Inc.

Crowe Chizek and Company, LLC

DiamondCluster International, Inc.

Equity Office

Ernst & Young, LLP

Fermi National Accelerator Laboratory

FONA International, Inc.

Foote, Cone & Belding

GE Healthcare Financial Services

General Growth Properties, Inc.

Getty Images

Greeley and Hansen

Griffin, Kubik, Stephens & Thompson, Inc.

Harley Ellis Devereaux

Hephzibah Children's Association

Illinois Material Handling

Infogix

M.A. Mortenson Company

Milhouse Engineering and Construction

Millennium Electronics, Inc.

Morningstar Inc.

MTL Insurance Company

National Futures Association

NationaLease

Office Concepts

Otterbase

Paylocity

Rabjohns Financial Group

RSM McGladrey, Inc.

Schwak, Inc.

Service Express, Inc.

Shure, Incorporated

Sikich, LLP

Stout Risius Ross, Inc.

Tetra Tech EM, Inc.

The Marketing Store

ThoughtWorks, Inc.

Thresholds

TLContact, Inc.

Urban Innovations

Vapor Bus International

Verizon Wireless

VW Credit, Inc.

West Monroe Partners

Wheels, Inc.

Wunderman