The Comfort Zones, a London-headquartered talent representation/ad agency consultancy firm (SHOOT, 1/26, p. 1), will rep Los Angeles-headquartered Top Dog in most international markets (except for the U.S., Canada and the U.K.). A division of bicoastal RSA USA and London-based RSA Films (SHOOT, 1/19, p. 1), Top Dog specializes in garnering spot assignments for select feature filmmakers. The Top Dog roster includes Oliver Stone, Anjelica Huston, Dennis Hopper, Gary Oldman, Diane Keaton, Tim Roth, John McTiernan, Renny Harlin, Stephen Hopkins, Mira Nair, Stephan Elliott, Kevin Allen and Casey Affleck….Park Pictures, New York, has signed New York-based independent reps Michael Arkin and Jennifer Warren to handle the East Coast. Chris Brenneman of Stacy & Annie & Chris, Chicago, reps the company in the Midwest….Independent firm Ellen Knable & Associates (eka) has taken on West Coast and Midwest representation for Santa Monica-based motion graphics design company Belief. Knable has also been named head of U.S. sales for Montreal-based production house Fabrique d’Images….Director Tom Donald of Tom Donald Films, San Francisco, is now being represented in Canada by Navigator Films, Toronto….Susan Berg has been appointed as the in-house sales representative for Blink.fx and Image Editorial, New York. Berg spent the past three and a half years as a senior sales executive at Manhattan Transfer, New York…. Underwater DP specialist Pete Romano has joined The Mirisch Agency, Los Angeles, for exclusive representation…. DP Tom Houghton lensed By Courier, which was nominated for an Academy Award in the live-action short film category. Houghton is repped for spots by The Directors Network, Studio City, Calif…. Production designer Walter P. Martishius has finished work on Dinotopia, directed by Marco Brambilla, and is available exclusively through Lyons•Sheldon•Prosnit, Los Angeles….