* Former Mainframe CEO Rick Mischel is now an executive producer at Rainmaker in Vancouver, following the latter’s takeover of his company last year. The transition will keep Mischel with his previous Mainframe team.

* Marblemedia in Toronto has hired Diane Williamson, formerly of Corus Entertainment, for the new position of VP of interactive.

* Stephen Green is the new VP of sales and affiliate marketing at Astral Television Networks.

* Tara Walker has been promoted to executive director of the Manitoba Motion Picture Industry Association, ending an interim posting.

* Stephanie Lincourt is now head of communications for the National Film Board. The former CBC communications exec will oversee strategies and projects concerning the NFB’s image and media relations.

* Brody Ratsoy is now GM of Western Post Production in Vancouver.

* Sonia Ormaechea is the new sales director, in charge of key regions including the Americas and Australasia, for Toronto-based Ellis Entertainment.

* Shirley Adamson has been elected chairperson of the board at APTN following its AGM held in Winnipeg.