Editor's Note - Two of the hottest photographers in the business help this season's stars shine. THE SEASON AT A GLANCE Why some actors are working twice as hard. Plus: Ampersandwiches. PRIME TIME HOW'S a viewer to choose among 37 debuts? Flip these pages before you flip channels. CABLE SERIES What's Up? Documentaries, as cable catches Biogra-fever. Meanwhile, MTV slacks off. SYNDICATED SERIES New versions of Knight Rider, Fame, and the return of Due South prove old series never die. MADE-FOR-TV MOVIES They're weird. They're wild. And those are just the movies that are based on true stones. FEATURE FILMS Show me the movies! Gene Siskel's top ten picks include Jerry Maguire.' SPECIALS Ken Burns and Michael Palin are up to their old treks; whats noirs is yours on AMC. SPORTS Kickoffs