Guest stars are often incredible additions to a series - but which ones were the most iconic over the course of Mom's run?
Mom may be coming to an end, but it provided plenty of funny and memorable episodes over the years for audiences to watch again and again. Guest stars, especially recurring ones, add something to the main character's lives, building up a rapport and chemistry with them to create funny situations, heated romances, and the like.
Harry Hamlin appeared on the show, briefly playing one of Christy's beaus, and Rainn Wilson made a memorable impression as Bonnie's therapist. With eight seasons under its belt, Mom had plenty of guest stars on the show, with many familiar faces making appearances throughout the series.
Michael Angarano is familiar to fans of Will & Grace for playing Elliot, but he can also be found playing Cooper on Mom. Christy meets Cooper when they work on a project together, and they quickly end up together. However, while Christy considers their relationship nothing more than sex, Cooper clearly sees it as more, which puts Christy in a tough position.
Apart from playing Kathy on Friends, Paget Brewster can be seen in Mom as Veronica, Christy's former boss. Veronica was no ray of sunshine, given her high-strung personality and brutal nature. She pushed Christy beyond her limits and stressed her out to no end, as Christy wanted to do everything she could to please her boss. Christy even had to take on the daunting task of getting her boss sobered up for a meeting in one Season 7 episode.
Harry Hamlin plays Fred on Mom. He meets and shows an interest in Christy when he runs into her, Bonnie, and his daughter Candace having lunch together. While Bonnie is thrilled at Fred's interest in Christy and pushes her daughter towards a relationship with him, Christy is a little more hesitant.
At least initially, as she ultimately does decide to go out with him. Their relationship is brief, but Christy did enjoy the fact that it bothered Candace to no end, at least until she saw how Fred treated his daughter.
Octavia Spencer appeared in the early seasons of Mom as Regina, whom Bonnie and Christy meet at one of their AA meetings. As it turns out, Regina's in big trouble; she works as a money manager, but has embezzled her clients. She does serve jail time, but when she's released, she's completely changed her life for the better, having come a long way since hiding out at Christy and Bonnie's house because she thought the police were staking out her home.
Chris Pratt has made a splash on the big screen playing Star-Lord in the MCU, as well as Owen Grady in the Jurassic World trilogy. However, he also made an appearance on Mom, portraying the boyfriend of Christy, the character that his real-life wife at the time, Anna Faris, played. Pratt's character, Nick, is handsome and charming, but unfortunately, Christy finds out the hard way that there's more to Nick than meets the eye, and that she was wrong to ignore Marjorie's warnings about him.
Christy is stunned to discover that, back in the day, Bonnie and Jeanine (Rosie O'Donnell) were more than friends. Christy and Bonnie once lived with Jeanine, and run into her again at an AA meeting.
Later, when Jeanine learns that Christy has a lot on her plate between work, college courses, and her family, she suggests that Christy quit and come to work for her; while the offer tempts Christy, she decides that it's in her best interests to power through and stay in school to achieve her goal of being a lawyer.
Emily Osment played a very important role on Mom. Her character, Jodi, is a drug addict that wants to get sober, and Christy and Bonnie try to help her do so. Unfortunately, Jodi ends up dying from a drug overdose, and it has a big impact on Christy, Bonnie, and the rest of the gang. Jodi's story heartbreaking but not unrealistic, and highlighted how difficult it can be to stop using.
Ed Asner is a veteran actor, having played the role of Lou Grant on The Mary Tyler Moore Show, August March in both the original and reboot series of Hawaii Five-0, and Santa Claus in Elf. However, he also makes an appearance on Mom as Jack, one of the tenants in the building Bonnie and Christy have recently moved into. Jack catches Bonnie making out with Alvin in the laundry room, and shamelessly flirts with her right in front of Alvin.
Other than playing Dwight on The Office, Rainn Wilson can also be found as Trevor, Bonnie's therapist on Mom. Trevor does help Bonnie, but unfortunately struggles in his own personal life courtesy of a divorce and some financial difficulties.
Bonnie and her friends helped Trevor on one particularly bad night, and Jill was even interested in him. It took some time, but eventually, Bonnie and Trevor grew to be good friends in addition to their doctor-patient relationship.
Apart from starring roles in Peggy Sue Got Married and Romancing the Stone, Kathleen Turner has also appeared on Mom as Cookie, the long-lost aunt of Tammy. Tammy is thrilled to meet her aunt, but unfortunately, her newfound family member comes with strings attached, as Cookie needs a kidney. As Tammy gets to know her aunt, she finds out more about her background and uncovers some of Cookie's lies as well.
