<Li> Diane, played by Mira Sorvino & Lisa Borgnes, is a woman with whom Will has a drunken one - night stand in order to convince himself he was a 100% gay after leaving Grace . She is also one of Leo's exes . Both of these facts make Grace very jealous . Diane states that Will is much better in bed than Leo . Diane was shown briefly (though she had no lines) in the season 3 episode titled "Lows In the Mid-Eighties", but was played by a writer's assistant, Lisa Borgnes . </Li> <Li> Claire, played by Megyn Price, is Will's high school friend and girlfriend, the first of the only two women Will has ever dated, the second being Grace . She lives in Paris and asks Will to donate sperm so that she can have a baby, but Will realizes that if he was going to donate sperm he wanted to donate it to Grace . </Li> <Li> Michael, played by Chris Potter in season 2 and Cheyenne Jackson in season 9, is a mostly unseen character and is Will's lover of seven years . When the sitcom first appeared, he and Michael had recently broken up . Michael appears in the episode "Hey La, Hey La, My Ex-Boyfriend's Back", which aired on March 14, 2000 . He is mentioned occasionally by Will and Grace, and more than once Will refers to him as the love of his life . In the early seasons of the show Will has a hard time letting him go . He and Will begin dating again in season 9, but Will ends ti when Michael asks for money . </Li> <Ul> <Li> Lyle Finster, played by John Cleese . Lyle is the father of Stan's mistress, Lorraine . He becomes Karen's fourth husband for about 20 minutes until the couple realize how little they had in common outside of the bedroom . </Li> <Li> Scott Woolley, played by Jeff Goldblum . Wooley is the man who lost to Karen for Student Body President and has spent his life hatching schemes to ruin her . Sadly, his schemes are often poorly thought out and eventually Grace realises that he doesn't hate Karen, he loves her . However, his attempts to woo her are as misguided as his previous ones . Woolley also has a dreadful sense of word - play (i.e. "The Scotty Mammoth", "Beam me up, Woolley"). He also changes his first name when using an alias, whereas most people change their last names . </Li> <Li> Lionel Banks, played by Rip Torn . Banks is a bachelor who falls for Karen, under her alias Anastasia Beaverhausen, while Stan is in jail and tempts her into having an affair . </Li> <Li> Malcolm Widmark, played by Alec Baldwin . Widmark is a government agent who helps Stan fake his death . He has a brief relationship with Karen before she reconciles with Stan, and Widmark goes on a government mission to Sri Lanka . Malcolm reappears in the final two episodes of season 9, where it is revealed that he and Karen go on a rendezvous trip every year . However, Malcolm is very tired of having to hide from Stan and pressures Karen into deciding between him and Stan . Though she is reluctant to change their situation and despite both of them being tempted to give in to each other, Karen decides to stay with Stan and she and Malcolm share an awkward goodbye . </Li> </Ul>

Who is playing michael on will and grace
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