At the gym, Will spies another guy who looks maddeningly familiar, while Jack gets a workout as he keeps repeating one of his nonsensical catchphrases in hopes of seeing it become popular among the sweat set. Meanwhile, Grace gets some bad advice from Karen when she seeks a loan to expand her company so she stoops to asking her wealthy employee herself for the money—even if she has to resort to drastic measures to get the point across.

While visiting Karen's incarcerated husband, Grace re-discovers a handsome high school friend who's also doing time in prison, and despite Will's advice, she's soon dressing up and visiting the inmate while dreaming of a life together outside the Big House. Conversely, a sympathetic Rosario chides Karen for not standing by her man – and bets her boozy boss that she and pal Jack cannot stay penned-up together in the same room for three days without harming each other.

After Will and Grace move into their expansive new dream apartment, they discover the awful pangs of separation anxiety as they pine for their smaller old digs now happily occupied by their friends who sub-let the place. Elsewhere, Jack tries to reconcile Karen with her estranged grifter of a mom, who wants to recruit her daughter for her next caper.

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.

Jack suffers Karen's wrath when he is seduced into friendship with her manipulative British romantic rival, who has set up house with Karen's ex-husband. Meanwhile, Will and Grace try to re-connect their lagging friendship with a competitive night of board games with their friends.

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 learns that Karen missed her physical, so he takes her to one of the finest doctors in the city. It is not until after the doctor does a demonstration on Will that Karen obliges. While at the office, Jack flirts with a male nurse, and he later announces that he's going to be a nurse himself. The problem is, training costs $2,700, and Will and Karen are reluctant to give him the money. Once they pay the fees, Jack, fickle as ever, announces that he's taken up surfing, and that he needs $1,600 for lessons. Will and Karen are about to let the nursing school know of his decision to drop out until Jack comes up with an inventive way to feed Karen her calcium pills.

When Will and Grace meet a stranger named Ned in the elevator, Grace accuses Will of being too nice to people he doesn't know. While Grace befriends Ned and invites him to dinner, Will makes some nasty remarks about him, but they soon discover that Ned's not the best company to keep. Meanwhile, Jack is having trouble at his new company because he feels he can't relate to his co-workers after they mock him about his Cher doll. Karen and Rosario lend some much-needed support.

Grace attends a holiday party at Will's mother Marilyn's home and accidentally breaks a treasured Lladro figurine. Will convinces Grace not to tell his mother and to blame the accident on one of the other guests at the party. Elsewhere, Karen's stepdaughter, Olivia, comes to stay for the Christmas holiday. While lunching at the mall they start making fun of people, but Karen's remarks are especially mean and Olivia and her friends take offense.

LIVE SEASON PREMIERE - Grace contemplates having an affair with a married man. Elsewhere, Jack begins new career as a host of his new talk show ""Jack Talk."" Will gets some advice from Malcolm and tries to hide from Karen the fact that Stan is alive. Alec Baldwin and Eric Stoltz guest star, Shelly Morrison also stars.

Grace contemplates having an affair with a married man. Elsewhere, Jack begins new career as a host of his new talk show "Jack Talk." Will gets some advice from Malcolm and tries to hide from Karen the fact that Stan is alive.