DeGeneres makes a brief appearance on Conan, during the opening monologue. An audience member brags about all the gifts she has received as part of The Ellen DeGeneres Show audience, after which DeGeneres actually shows up on stage with O’Brien. She gives away free Beats headphones to the Conan audience.
Ellen DeGeneres appearance
Ellen DeGeneres Surprises Conan's Audience – CONAN on TBS