<Li> Nicollette Sheridan, as Dr. Danielle Morty, a fellow doctor who wanted Leo sexually . </Li> <Li> Jamie - Lynn Sigler, as Ro, Vince's lesbian sister . </Li> <Li> Britney Spears, as Amber Louise, a conservative Christian and a "hardcore lesbian" as she describes herself, and a co-host to Jack on his talk show . </Li> <Li> Wendie Jo Sperber, as April, Grace's short - lived housekeeper . </Li>

Who played will's husband on will and grace