Kate McKinnon Takes Over for Ellen

The "SNL" star has made a business of impersonating Ellen, and she was here for the first time to show Ellen her impression of her -- live!

Aubrey Plaza Meets Ellen

The adorably quirky Aubrey Plaza isn't much for dancing, but she gave her first appearance on Ellen the old Aubrey Plaza try.

On Ellen

Mario fantasizes about meeting Ellen.

Macklemore & Ryan Lewis: Same Love, Live

This hip-hop act broke new ground when they released this song about marriage equality on their new hit CD. Watch the performance that brought Ellen's audience to their feet, right here.

Psy Brings down the Ellen House!

There's nobody quite like him! Korean rap sensation Psy gave a show-stopping performance of his epic song, "Gangnam Style," right on the show. You won't see another one like this!

Taylor & King: You've Got a Friend

Ellen DeGeneres Show(05/18/10) The legendary James Taylor & Carole King performed their classic," You've Got a Friend " on the show today,the told Ellen all about their current tour.