RadioShack tapped Grey New York as its lead creative agency of record, a position previously held by Butler, Shine, Stern & Partners.

Leo Burnett Worldwide was named agency of record for Bridgestone Americas Tire Operations. The agency will handle creative chores for the Firestone tire and Firestone Complete Auto Care brands.

Guitar Center tapped McGarrah Jessee to collaborate on brand development. Building off of a recently completed brand strategy and positioning initiative, McGarrah Jessee is now in creative development for several national broadcast campaigns.

Crittenton Hospital Medical Center, a 290-bed health care facility in Rochester, Mich., selected pushtwentytwo as its creative and TV production marketing agency.

Mediterranean Snacks, maker of Baked Lentil Chips, HummuZ crispz and Veggie Medley Chips and Straws named The S3 Agency as its public relations agency of record.

Bender/Helper Impact was named U.S. media agency of record for Square Enix, Inc., publisher of SQUARE ENIX interactive entertainment products in the Americas.