HALLOWEEN, PART I: Taz and Snoopy are gearing up for Halloween by introducing new products from Russell Stover Candies. Snoopy unveils Whitman's Snoopy Treats in one spot. In the other :15, the Tazmanian Devil rolls out Russell Stover Looney Tunes Treats.The commercials, created by Bernstein-Rein
, Kansas City, Mo., break today. Copywriters: Jeff Bremser, Steve Wood. Art director: Bill Courtney.