Ask guys like us to cite two words that guarantee entertainment, and we'll answer either "Food fight!" or "Shark Week." Beginning Sunday and continuing the next seven nights at 9 p.m., Discovery Channel will post a NO SWIMMING sign around such programs as Great White: In Search of the Giants and Hammerheads: Nomads of the Sea. Endorsalable programs, but why not give others in the food chain equal time? May we suggest Monkey Mondays, Wildebeest Wednesdays, Mite Night and our personal favorite, The Bunny Hour?