Ellen DeGeneres

Cee Lo Green brought some yuletide cheer to 'Ellen' when he treated viewers to a live performance of 'What Christmas Means to Me,' a lively track from his holiday album 'Cee Lo's Magic Moment.'

Amanda Seyfried is quickly becoming our celebrity BFF. Earlier this week on 'Late Night With David Letterman,' she admitted that her intense stage fright means she needs to get her drink on before she goes on talk shows. And then she proved the point when she stopped by 'The Ellen DeGeneres Show' and did an impromptu rap. With a frog mask on her head.

Usher stopped by 'The Ellen Show' to perform his 'Looking 4 Myself' single 'Numb.' The performance was a consummate Usher endevour complete with lights, fog, amazing choreography and impeccable vocals.

If you're Christina Aguilera, you spend every waking moment in as little clothing as possible and you always go commando. And even when you're not naked, you still talk about it with people like Ellen DeGeneres. And then maybe you throw in a non-related story about your girl crush on Hillary Clinton. (Something we all have, really.)

Christina Aguilera took her powerhouse pipes to 'The Ellen Show,' where she performed her heartbroken country-tinged ballad 'Just a Fool' with her fellow 'The Voice' coach Blake Shelton.

Before heading to Mexico City for the first stop on her 777 Tour in support of her new seventh album 'Unapologetic,' Rihanna visited 'Ellen,' where the two chatted about RiRi's dating life, her desire to someday have kids, and that sexy naked GQ photo shoot.

Halloween is a fun day for a lot of shows, but with the weather situation this year, a lot of programs canceled their annual celebrations. But on Wednesday, Ellen DeGeneres did us a huge favor and gave us something awesome to laugh at. She dolled herself up as fellow Cover Girl spokesmodel Sofia Vergara.

Taylor Swift gave a mini-concert during her appearance on 'The Ellen DeGeneres Show.' She performed outside for a jam packed lot of fans, sailing through the catchy title track from 'Red' and 'We Are Never Ever Getting Back Together,' as well as the "classic" fan fave 'You Belong With Me.'

Poor Taylor Swift. She may be beautiful, beloved and talented, but she has an Achilles Heel, and that's her "niceness" and her neuroses, especially when it comes to revealing which former boyfriends her songs are about. Leave it to Ellen to exploit that weakness on her show, on the national stage.

We all know that Ellen DeGeneres is the most friendly, least intimidating comedian around. Except for the time she accidentally made Taylor Swift cry.

Ellen DeGeneres is always doing her part to brighten spirits. Fortunately this sometimes comes at the expense of a famous person's dignity. Here is a montage of a bunch of times Ellen had somebody sneak up behind a guest and scare them. Oh, and sometimes it's just Ellen lurking in a bathroom corner...

If there's one thing Ellen DeGeneres loves, it's kids on YouTube. This time she found the boy who was crying in a popular viral video because he isn't allowed to sing a racy Nicki Minaj song. She put him on the show and let him do his thang.

A few weeks ago, we discovered some of the most hilarious ‘Pitch Perfect’ memes and GIFs, starring our comedy crush, Rebel Wilson. We didn’t think it was possible for our love of the actress to get any bigger, but incredibly enough, it has skyrocketed.

Ed Sheeran was recently invited to 'The Ellen DeGeneres' show, on which he performed an acoustic version of his '+' song 'Grade 8.'

video platformvideo managementvideo solutionsvideo player British cutie Cher Lloyd performed 'Want U Back,' her platinum smash single, on 'Ellen' today (Oct. 1), in advance of the release of 'Sticks & Stones.' The album lands tomorrow, and what better way to remind her Brats to pick up the record than by performing her biggest song on a national daytime talk show?

Amy Poehler just keeps on giving us more reasons to love her. For example, now we know that she has somehow managed to avoid learning the words to 'Bad Romance,' which is truly, truly admirable. Thank you, Ellen, for giving us this little gem to light up our day...