>• I'm always glad when Lifetime's Army Wives returns-the fourth season starts April 11-if only to watch languid Catherine Bell. She has a delicate droop that dips even deeper when her character, Denise, is emotionally pained. In the premiere Denise has to venture out into the military community after a crisis with her battle-scarred son. She's an orchid that could use a strengthening spray of pesticide.