See all the celebs who have made surprise appearances on Taylor Swift's '1989 World Tour.'
Harry Styles, Anna Kendrick, Katy Perry and more stars react to the U.S. Supreme Court's historic decision.
'Pitch Perfect 2' star Brittany Snow showed the world her 'Gangsta's Paradise' rendition on 'Ellen.'
Scarlett Johansson was promoting 'Avengers: Age of Ultron' on 'The Ellen Show' when Chris Evans snuck out from backstage and epically scared her.
Viral sensation Noah Ritter put his dinosaur knowledge to the test when he faced off against Chris Pratt on The Ellen Degeneres Show on April 23.
Halloween is one of Ellen Degeneres' favorite season, because that gives her an actual excuse to scare the living bejesus out of the guests on her talk show... even though she's always prepared for a good fright during the off season as well.
Heaven King does an amazing job dancing to Beyonce on 'The Ellen Degeneres Show.'
Ellen DeGeneres, Portie De Rossi and Zoe Saldana have all spoken up about their views on the Dolce and Gabbana Boycott
Madonna posted a photo of herself stealing a kiss from Justin Bieber while both were backstage filming The Ellen Degeneres Show.
Madonna stopped by the Ellen DeGeneres Show earlier today (March 17) as part of her promo circuit for her latest album Rebel Heart, and she talked about a whole slew of things.