John Bellina, former executive creative director at Tequila/N.Y. -- the interactive wing of TBWA/Chiat/Day -- has joined Publicis & Hal Riney in San Francisco as a creative director and copywriter. ... Sharon Lew, formerly of Lew & Company, is closing her independent repping firm and joining the staff of Crossroads Films as head of sales for the company and its affiliates -- X-Ray Productions and Velocity@Crossroads. Similarly, O'Brien Company reps Helen O'Brien and Janice Harryman, who have been repping Crossroads in the Midwest since 1993, have signed on to represent Crossroads exclusively. ... Carol Jazwinski, formerly of Company 3, has joined New York's PostWorks as VP of sales.