Bob Walker has been named exec veep and g.m. of networks and content for the Weather Channel, reporting to CEO Mike Kelly. Walker joined the cabler in 2010 after serving as prexy and g.m. of WXIA-TV and WATL-TV in Atlanta.Indian conglom Reliance has appointed Ashok Ganapathy chief exec of its multinational exhibition chain Big Cinemas. He was previously with the RPG group, where he oversaw operations at Spencers Retail’s 220 stores. Collins Avenue has upped Mike Aho to veep of factual programming and Michael Hammond to veep of production. Aho had been veep of development; Hammond was exec-in-charge of production. Vicki Berthelot Rocco was appointed to VP of finance at 3ality Digital. Prior to joining 3ality, Rocco was veep of finance at Hyde Park Entertainment. Bender/Helper Impact has promoted Jessica Bass, Sharna Ettenberg and Brigid D’Arcy to the company’s Entertainment Content and Digital Entertainment team. Bass and Ettenberg will be account supervisors. D’Arcy will be a new account exec. Robert Sherman has been appointed as a partner in Reed Smith’s financial industry group in the law firm’s Century City office. Sherman was previously a partner at Manatt, Phelps & Phillips in LA. Nickelodeon/MTVN Kids and Family Group has upped Sergio Cuan to senior VP and creative director of brand and property design. Cuan is a 15-year Nick vet.