5. Jack Comes Out to His Mom
(“Homo for the Holidays,” season 2, episode 7)
Veronica Cartwright guest stars as Jack’s mom, Judith, to whom he has never come out of the closet. Instead, he says that he and Grace used to date. But when Jack eventually reveals his big secret, Judith reveals one of her own—Jack’s “father,” Daniel (Beau Bridges), is actually his stepfather. Jack’s biological father was a man with whom she had a one-night stand on Halloween.