It's everyone's favorite Adler (sorry Grace) - Debbie Reynolds! Guest starring as Grace's mom throughout the series, this musical theatre legend had many a memorable moment - including singing some of her iconic showbiz hits on the show!

Grace (Debra Messing), who is usually irritated by her well-meaning but meddling mother (guest star Debbie Reynolds), gets jealous when her mom starts to dote on Will (Eric McCormack).

Following Ellen’s cancelation, many believed that any primetime show with a gay lead was cursed to fail.

Listen lady! Rosario was ICONIC on Will & Grace.

Jack (Sean Hayes) meets the real Cher while out to lunch with his Cher doll. Unconvinced it's actually her, they have a Cher-off.

What's the difference between a Gen X and a Gen Z gay person? Will explains.

Jack (Sean Hayes) rebounds from his breakup with a new love.

Grace's mom (played by the legendary Debbie Reynolds) drops by for a visit. Cue a tension headache...

Grace's mom (played by the legendary Debbie Reynolds) drops by for a visit. Cue a tension headache...

Jack (Sean Hayes) wants to look younger before meeting Estefan's (guest star Brian Jordan Alvarez) family on Skype but makes a terrible first impression after overdoing the numbing cream before his facial procedure.

Will (Eric McCormack) and Jack (Sean Hayes) try to date younger guys but find it challenging.

Jack (Sean Hayes) takes on a new job he never expected to love.

Grace desperately needs this new contract, and Will seems to be the only one that can seal the deal.

Grace (Debra Messing) has dinner with Will (Eric McCormack), Karen (Megan Mullally), Jack (Sean Hayes), Leo (Harry Connick, Jr.) and Diane (Mira Sorvino), where Grace forces Will to tell her why she never slept with him.