A dazed Grace is rescued by a handsome Jewish doctor who pulls her up on his horse and delivers her just in time for her insemination with an impatient Will. But their new relationship as expectant parents puts a strain on Will and Grace's relationship when they agree not to date until their baby is born. Meanwhile, a restless Karen can't make up her mind about cheating on her imprisoned husband with the genteel but ardent suitor Lionel.

After stalking actor Kevin Bacon, Jack lands his dream job when the unsuspecting celebrity hires him as his personal assistant and immediately assigns him to find out who's been harassing him. Elsewhere, while Will and Grace wait for the right color to appear on their home pregnancy test, Grace is visited by a handsome doctor who makes her a tempting offer. In addition, Karen looks for a way out of her on-again, off-again relationship with the courtly and irresistible suitor Lionel.

Grace is so entranced by her budding romantic relationship with a handsome doctor that she asks an impatient Will for an extra month to re-consider her commitment to conceiving their child through artificial insemination resulting in verbal sparring match.

A bicycling adventure tests Will and Grace up in the Catskills with Leo and his pal in a quest for Halloween pumpkins.

When Grace accompanies Leo to dinner with some ""friends,"" she doesn't realize that he's tricked her and instead introduced her to his real parents and she soon regrets her earlier salty dialogue and suggestive attitude. Elsewhere, Jack is again confronted by Zandra his gruff acting teacher when he tries to showcase his meager talent in a class while a willing Will joins Karen in subjecting to a Botox facial injection.

Grace and Leo impetuously take their vows at a Central Park wedding that is a ratings stunt hosted by Today's Katie Couric. Grace's pals, especially Will, are hurt that they weren't invited, but all seems forgiven when everyone including Grace's outspoken mom and the subdued Mrs. Marcus gather days later for a swank reception. It should be a festive bash, but the emergence of unsettling details about Leo and about the park nuptials give Grace reason to wonder whether she has made a mistake.

Grace's wedding to Leo leaves Will feeling upset over losing his best friend.

On Christmas Eve, Grace is torn when she has only two tickets to ""The Nutcracker"" and can't take both her best friend Will and new husband Leo, but her back-and-forth indecision leaves Will spinning like a Hanukkah dreidel between a dithering Grace and his previous holiday plans with Jack and Karen.

Will and Jack continue their campaign to adapt Karen's awkward cousin Barry to his new lifestyle but their flamboyant efforts to help him only remind Will of his own clumsy experiences when he came out in 1986. Elsewhere, Grace feels abandoned by Leo when he leaves for three weeks to offer his medical services to the needy in Africa.

Will attempts to sneak Leo back from Africa to surprise Grace for her birthday. But things don't quite go as planed. All starting with when Grace runs into Leo who arrived a little too soon. But, to spare Will's feelings, they agree to act like they never saw each other. Grace asks Karen and Jack to keep Leo busy until her ""birthday surprise."" Unfortunately, the duo takes their mission too seriously.

In the middle of her divorce proceedings, Karen learns that ex-husband Stan has suddenly passed away, and the funeral becomes a contest of wills between Karen and her British rival, and a free-for-all when the will is read for everyone who ever felt deserving, such as Will. Meanwhile, Grace is shocked when recently returned husband Leo is called back into service by Doctors Without Borders and asks her to make the trip with him to Guatemala.

Karen, Will, Jack, and Grace go on a trip in Karen's yacht to sprinkle Stan's ashes into the Caribbean while Leo is flying to Guatamala with an atractive co-worker. While Karen sprinkles Stan's ashes she finds Lorraine has been stowing on board. While Karen and Loraiinne fight, Will and Jack get drunk. Lorainne pushes Karen off the board and Rosairo jumps off after her. The next morning Grace finds Leo's bag with a letter from his co-worker Danni saying that she wants Leo. Will wakes up in bed naked with a hangover and a naked Jack in the bed with him. Meanwhile Karen and Rosairo are stuck on a cargo boat.

Will and Jack awake in a precarious position - sharing a bed in the nude - while at sea. Unable to remember every detail from the night before, the two alleged bedfellows deny the possibility that anything happened, but each grow concerned as to how to dump the other. Meanwhile, Grace's discovery of a love letter in Leo's bag from a female colleague prompts her to doubt his fidelity and Karen survives a night fighting for her life while afloat in the forbidding night sea and a freighter full of russian sailors, and must honor a pact with savior Rosario.

When Leo invites his hip and trendy ex-girlfriend to a friendly dinner party, Grace turns to Will, Jack and Karen to round out the guest list and keep the night running smoothly. However, when Leo's ex turns out to be the only girl Will ever slept with, Grace's jealousy gets the better of her. Meanwhile, Karen discovers Lorraine's dog Chompers hiding in Stan's closet and searches for a new owner for the puppy.

When Grace and Leo join Karen for a friendly game of tennis at her exclusive club, her fierce playing style sends Grace fleeing the court. However, when the reason for her angry play is her hatred for Leo, Grace is determined to find a way for them to get along. Elsewhere, a nervous Will suckers Jack into visiting his depressed mother in Connecticut hoping they can cheer her up.

Depressed over his decision to leave Doctors Without Borders, Leo turns to a motivated Will to rekindle his love for New York. However, when Will's version of ""the best of New York"" filled with long shopping trips and high tea doesn't do the trick, Leo decides to move in a different direction. Meanwhile, Jack teams up with his new coach Karen as they prepare for the annual gay spelling bee.

Opting to forgo a picturesque fall wedding to elope in Las Vegas, Karen hops a plane to ""Sin City"" with fiance Lyle and faithful friends Will and Jack but when she bumps into vacationing superstar Jennifer Lopez, she asks J-Lo to sing at the ceremony. Meanwhile, Leo returns from Cambodia to meet up with Grace at the wedding, but their reunion is delayed by a freak design accident.

Opting to forego a picturesque fall wedding and elope in Las Vegas, Karen hops a plane to ""Sin City"" with fiance Lyle and faithful friends Will and Jack. After arriving, they bump into superstar Jennifer Lopez who is vacationing and agrees on behalf of Rosario to sing at the ceremony. Meanwhile, Leo returns from Cambodia to meet up with Grace at the wedding, but their reunion is delayed by a freak design accident.

Jack and Jennifer Lopez return from her summer tour to relax, but a pushy Karen recruits Jack to help her get Lopez's attention for her newly written song, ""FYI: I Hurt, Too."" Meanwhile, Grace takes out her frustrations over her cheating husband Leo on a beat-up Will.

Grace comes home from a great date and listens to a staticy message she's received from Leo. Grace hides the message from Will, but when Will learns about it, he decides to take Grace to the Berkshires to get her mind off of Leo. Meanwhile, Karen and Jack try to set each other up.

While en route to London, Will and Grace spot Grace’s ex-husband Leo on their flight. Will charms a pair of gay flight attendants, who also happen to be dating, so he can smuggle Grace into first class to talk to Leo.

A nervous but optimistic Grace decides it's finally time to tell Leo she is pregnant with his child, but when she finally works up enough courage to actually meet her ex-husband she receives some unexpected news.

The culmination of eight seasons ends tonight with a one-hour series finale - will Will and Grace raise a child together and find ultimate happiness? Will Jack find anyone that loves him as much as he loves himself? Will Karen find true happiness with the absence of Stan? All these questions and more will be answered as this groundbreaking series concludes eight amazing seasons.

The culmination of eight seasons ends tonight with a one-hour series finale - will Will and Grace raise a child together and find ultimate happiness? Will Jack find anyone that loves him as much as he loves himself? Will Karen find true happiness with the absence of Stan? All these questions and more will be answered as this groundbreaking series concludes eight amazing seasons.