S8, E9: While spending the holidays at Will’s (Eric McCormack) mother Marilyn’s (guest star Blythe Danner) house, Grace (Debra Messing) gets cozy with Will’s brother and old flame Sam (guest star Steven Weber). Sam’s adopted daughter finds a fan in Karen (Megan Mullally), who is intrigued by the little girl. Meanwhile, Jack (Sean Hayes) helps Will’s clearly gay ten-year-old nephew organize and perform a Christmas show, which Marilyn is thrilled about. Will is silently fuming, however, as Marilyn is much more tolerant of the young boy than she ever was of her own son.