I Do. Oh, No, You Di-in't

Episode #		139 (6.23)
Season #		6
Original Airdate		4/29/2004
Writer		Part 1: Jeff Greenstein & Jhoni Marchinko; Part 2: Kari Lizer & Sonja Warfield
Producers		Jeff Greenstein & Jhoni Marchinko and James Burrows
Director		James Burrows

Plot Synopsis

Opting to forego a picturesque fall wedding and elope in Las Vegas, Karen hops a plane to "Sin City" with fiancé Lyle and faithful friends Will and Jack. Meanwhile, Leo returns from Cambodia to meet up with Grace at the wedding, but their reunion is delayed by a design emergency.

Cast

Eric McCormack (Will Truman)
Debra Messing (Grace Adler)
Sean Hayes (Jack McFarland)
Megan Mullally (Karen Walker)
Shelley Morrison (Rosario Salazar)

Guest Cast

John Cleese (Lyle Finster)
Harry Connick Jr. (Dr. Leo Markus)
Tim Curry (Marion Finster)
Leslie Jordan (Beverley Leslie)
Jennifer Lopez (Herself)
Tara O'Connor (Photographer)
Michael Morris (Ethan)
Mark Juliano (Himself)

Notes

One-Hour Season Finale. In syndication will air as two parts, "I Do" (Part 1) and "Oh, No, You Di-in't" (Part 2).
Debra Messing does not appear in this episode (Grace had to "design a sex room for one of the ladies on The View").
Leo admits to Will that he cheated on Grace while he was in Cambodia. When he calls Grace, she tells him she never wants to see him again.
At the wedding reception, Karen gets cold feet and changes her mind about the marriage.
Jennifer Lopez sings "Waiting for Tonight" at the wedding reception. She later invites Jack to tour with her as a backup dancer.
Production services, facilities and hotel accommodations were furnished by The Ceasar's Palace. Ceasar's Palace president Mark Juliano appears as himself.