ALAN CITRON, previously general manager for TMZ, joined Buzznet to head special projects.

BOB LUKASIK, former executive creative director of G2 Interactive, joined imc² as vice president/group creative director.

Carat hired JENNIFER TUCCERI as an account supervisor.

Mintz & Hoke Communications Group promoted MIA WALTERS from account supervisor to account director.

Sportgenic named KEVIN M. GRANATH senior vice president of sales.

CHRISTINA PISANO was named vice president of research for WE tv. Pisano was formerly vice president of research for NBC Universal Cable Entertainment, Oxygen and Bravo Media.

JONATHAN DUBE was named …

DIY Network named STEVEN LERNER as director of programming.

STEPHEN ALLAN, previously CEO of GroupM UK, has been named chairman & CEO of MediaCom Worldwide. He succeeds ALEXANDER SCHMIDT-VOGEL, who has taken on the newly established role of CEO global trading of GroupM Worldwide.

St. John & Partners added MIKE D’ABREU as a copywriter in the agency’s creative department. He will service the firm’s Smoothie King and Zaxby’s accounts. D’Abreu joins St. John & Partners after spending four years at 22squared, working on the …