Lilith (Bebe Neuwirth) is crushed beyond reconciliation when her favorite lab rat dies. Her depression spills over into her home life, sorely threatening son Frederick's chance for enrollment in an exclusive pre-school. Meanwhile, perennial Cheers habitué Paul Kreppin (Paul Willson), the man who's "always left out," is pursued by a gorgeous woman who has already spurned Sam (Ted Danson). ~ Hal Erickson, Rovi