Wedding Balls

S4, E22: Will (Eric McCormack) expects two friends to arrive in New York to plan a wedding, but when the bride-to-be falls ill, he asks a willing Grace (Debra Messing) to work with the clueless groom (guest star Steven Shenbaum) to work out the details - but she gets a little too involved in the dreamy details and fancies herself a bride instead. Meanwhile, Will and Karen (Megan Mullally) get chummy over a steamy potboiler book that they're both reading which leaves a jealous Jack (Sean Hayes) fuming as the odd man out in the book-of-the-month club.