Dr. Swati Mohan, Mars Rover scientist, joins us along with panelists Adam Felber, Dulcé Sloan, and Mo Rocca.

This week, WWDTM spends time with the people we wish had been our Valentines; Sarah Paulson, Tyra Banks, A'ja Wilson, and Andrew Rannells.

Abby Phillip, host of CNN's "Inside Politics", joins us along with panelists Paula Poundstone, Tom Bodett, and Alonzo Bodden.

Owen Wilson, actor, joins us along with panelists Faith Salie, Peter Grosz, and Laci Mosley.

Jen Psaki, the White House press secretary, joins us along with panelists Tom Papa, Jessi Klein, and Yassir Lester.

Mandy Patinkin, actor, is joined by his wife Kathryn Grody along with panelists Mo Rocca, Helen Hong, and Josh Gondelman.

Phoebe Bridgers, musician, joins us along with panelists Roxanne Roberts, Luke Burbank, and Negin Farsad.

Actor Jane Krakowski joins us, along with panelists Amy Dickinson, Maeve Higgins, and Joel Kim Booster.

We say goodbye to 2020 with Christine Baranksi, Doug Jones, Jonna Mendez, and Kellee Edwards.

We look back on our interviews with Don Cheadle, Tituss Burgess, and Jason Ward, as well as some fun moments with our panelists.