Kim M. posted this photo to Ellen's Facebook page. It must be for our gallery "Cats That Think They're Hiding." See all of the photos in the gallery here!

Ellen loves playing games with all of the guests on the show. And today, she's up against another hardcore gamer, Kirsten Dunst! Check out their hilarious game of Guesstures here.

Take a look at some of the best quotes from this week's guests.

"Calm puppy" sounds like an oxymoron, but it really suits Vaughn! She has a lot of puppy energy (even though she was born a few years ago in 2009), but also has a peaceful disposition. She's very sweet and loves attention, no matter who it comes from. She likes meeting new people and gets along great with other dogs.

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Mary L., from Parkville, Mo., says her 7-month-old baby girl loves to watch Ellen, and she's grateful for the mommy break! Looks like it's a daddy break, too! See more "What You're Doing While You're Watching" photos here!

"Melancholia" star Kirsten Dunst talked candidly with Ellen about her struggle with depression, and her break from Hollywood.

This dynamic duo is almost too much! The adorably precocious Nicki Minaj girls returned to Ellen to discuss how their lives have changed, and how Ellen dressed up as them for Halloween! While they were here, they couldn't help but perform another amazing song for Ellen. Take a look here!

America's favorite British girls are back! They were here for a hilarious interview with Ellen, but during the commercial break they brought the house down! Watch what Ellen called her favorite commercial break ever!

About to star as the legendary Captain Kirk in the blockbuster film "Star Trek," Chris Pine dropped by to tell Ellen about being shot to stardom and revealed his earliest on-camera experience.

After a fun day of playing with Taylor Swift, it was time for Ellen to crash her concert! In front of the entire Staples Center, Ellen took the stage to make "Our Song" officially "Their Song."