For Jews around the globe – including Jews in Hollywood – it's a week of celebrating Passover. So what were your favorite Jewish celebrities up to this weekend? Big Bang Theory star Mayim Bialik went full-blown for the holiday, sharing snapshots on Instagram shortly before Passover started of all her preparations. Bialik tied her cabinets closed with Big Bang Theory-marked ribbon, covered her kitchen counters with a tablecloth, got a horseradish plant for the Seder and kashered her microwave for the holiday. View this post on Instagram Snapshots of #pesach2019. Tying up the cabinets (with @bigbangtheory_cbs ribbon no less!), covered counters, a horseradish plant from my mom, and #kashering the microwave. #whatjewsdoforpesach #frumtothemax #liberation A post shared by mayim bialik (@missmayim) on Apr 18, 2019 at 9:56pm PDT In a blog post, Bialik wrote that this year “my ex-husband and I are taking our moms and our kids to a Jewish family camp for the Seders... it feels good to try something new.” Joshua Malina, the actor from The West Wing, Scandal and more, is celebrating in a pretty traditional way this year. On Instagram, he shared images over the past week of a huge pot of matzah ball soup, a box of Streit's Matzo Farfel and a bag of Paskez-brand Passover-friendly snacks. And over on Twitter, Malina used the holiday to fund-raise for Mazon, a Jewish nonprofit that works to alleviate hunger. “On Passover we proclaim 'Let all who are hungry come and eat,' yet who among us throws open his door to those in need?” Malina wrote. “It's a good time to offer a meal to the hungry on our streets, or to make a donation to @MAZONusa (or your favorite organization that addresses food insecurity).” View this post on Instagram Chag sameach! A post shared by Joshua Malina (@joshmalinasjoshmalina) on Apr 19, 2019 at 12:42pm PDT Supermodel Bar Refaeli, who is deep into preparations to host this year's Eurovision in Tel Aviv, shared a snapshot of flowers on her Instagram story with the caption “Happy Passover.” Singer Matisyahu posted a selfie on Saturday with his girlfriend and the caption “Happy Passover,” then followed it up with a photo of breakfast, titled “An instant classic: the Matisyahu 420 Pesach freedom sloppy brisket scramble.” Will and Grace star Debra Messing posted a selfie on Instagram of her and her son at the Seder. “Passover Seder with our chosen family,” she wrote, “(and yes, I know there's something in my teeth so you don't have to tell me.)” In a separate Instagram post, Messing issued a call to action: “Today is Passover. A Holiday that celebrates the Jews freedom from slavery and oppression,” she wrote. “It's a happy holiday. We give thanks, and ask God to free all peoples who are oppressed and don't enjoy equanimity all over the world. We must start in our own back yard.” View this post on Instagram Passover Seder with our chosen family. Thank you as always @cindygilston.❤️✡️ (and yes, I know there's something in my teeth so you don't have to tell me.) A post shared by Debra Messing (@therealdebramessing) on Apr 20, 2019 at 9:29pm PDT In the week leading up to Passover, disgraced comedian and actress Roseanne Barr posted several dozen increasingly bizarre videos to YouTube. In one, titled “Leaving slavery,” the actress told the camera: “Tomorrow is Passover. If you want to leave slavery tomorrow – you're welcome to join. My prayer is that we all leave... our personal slavery to the big lie and instead we become slaves to the truth.” Alex Borstein, star of The Marvelous Mrs. Maisel, posted a Seder selfie of her and her daughter, who was wearing a “blood” mask to represent one of the Ten Plagues: “Tonight was a bloody success. #passover2019,” she wrote. View this post on Instagram Tonight was a bloody success. . . #passover2019 #plagued A post shared by Alex Borstein (@alexborstein) on Apr 20, 2019 at 9:55pm PDT Yael Grobglas, the Israeli-born actress in Jane the Virgin, enjoyed a Seder at the home of Israeli comedian Guri Alfi in Los Angeles. She shared snapshots of her plate of food, the Haggada used and herself chowing down on matzah with the caption: “Happy Passover friends!” View this post on Instagram Happy Passover friends ! פסח שמח חברים! #passover A post shared by Yael Grobglas (@yaelgrobglas) on Apr 20, 2019 at 1:19am PDT And in a more unexpected holiday blessings, rock star and gentile Paul McCartney posted on Twitter the message: “Have yourselves a happy little Passover.” Have yourselves a happy little Passover. pic.twitter.com/fuV9ukIIGq — Paul McCartney (@PaulMcCartney) April 19, 2019