Antoinette Cook Bush has been named executive vice president and global head of government affairs at News Corp., reporting to chief executive Robert Thomson beginning June 24. Bush was previously a partner in the communications group at the law firm Skadden, Arps, Meagher & Flom.

Billups Worldwide has made two hires, naming Chris Newport chief innovation officer and Soyoung Kim director of media strategy. Newport had been working with the agency as a consultant, while Kim was a manager at OSI/OAG.

Tribune Co. has named Melanie Hughes executive vice president of human resources, effective immediately. Hughes most recently ran her own consulting firm, Org4Change.

Ben Widdicombe has been named a contributing editor at The New York Observer, where he will develop an original column. The former New York Daily News Gatecrasher columnist will also continue as editor in chief at Gilt City.

Jennifer Lopez’s role at the English-language Hispanic cable network NUVOtv is larger than originally planned. J.Lo has been named chief creative officer at the network, it said at its upfront presentation on Wednesday. Lopez already had a stake in the network under a previous deal through her company Nuyorican Productions, but she said her role grew the more she worked with the network.

Comedy Central has named Jason Shafton vice president of brand marketing, and he’ll begin by working on ad campaigns for the coming fall season. Shafton was previously head of play product and social marketing at Google.

Cablevision has promoted Clifford S. Harris, moving him from vice president to senior vice president of law and programming. Harris has been with the company since 2005.

Entercom has named Steve Sinicropi vice president and market manager, working with the company’s five radio stations in Greenville. Sinicropi most recently held a similar position at Cox Media Group.

After two years Nick Cannon is leaving his syndicated “Cannon’s Countdown” radio show, with the last episode to air the weekend of June 8. Mr. Mariah Carey still has plenty on his plate, however–he hosts NBC’s “America’s Got Talent,” which premieres its new season on June 4, and in July he’s bringing back his improv comedy show “Wild ‘N Out” on MTV2.

Bob Pares has been named executive vice president of sales business development at NewMediaMetrics, a strategic marketing and analytics company. Pares was previously U.S. head of sales and business development for Kantar Media’s Global TGI group.

BuzzFeed has named Matthew Zeitlin an economics and finance reporter, working with its upcoming business section. Zeitlin had been a business reporter at Newsweek/The Daily Beast.