General Motors has placed its Buick, GMC, and Pontiac brands in review. Incumbents Lowe Worldwide, McCann-Erickson, Leo Burnett and Martin Retail Group will defend the $200 million account.

Consumer package goods company Reckitt Benckiser has placed its $600 million global advertising account in review. Incumbents McCann-Erickson, Euro RSCG, and J. Walter Thompson will defend.

Empower MediaMarketing, Cincinnati will handle media planning and buying duties for the Commercial account of Humana Inc. Billings were not disclosed. Humana's creative will continue to be handled by various agencies. The most recent agency of record for Humana's Commercial media account was Northlich, Cincinnati.

Touted as its largest creative win, AKQA was awarded the interactive design contract for USPS.com. The agency has been tapped to maintain and update USPS' current flagship site and develop a plan to redesign the entire Web site experience. The win is a share of the $55 million contract.

CBS has trimmed the agencies in contention for its $130 million media account down to three: Initiative Media, OMD, and the incumbent, Carat.

TBWAChiatDay has been awarded creative duties on Masterfoods USA's Snicker's brand. The account is valued at $40 million.

Verizon Wireless has awarded Moroch Latino brand planning, creative development, media planning and buying and promotional marketing duties in 15 markets in the south. Spending was not released.

Comcast has narrowed its search for a media agency down to three: MediaVest, PHD and Carat.

After a three-month search, the Marcus Corporation has hired Kohnke Hanneken to handle its various Milwaukee area hotel accounts.

The Birmingham, Mich. office of McCann Erickson was named agency of record for the Travel Michigan account.