Celebrity guests are really the bread and butter of a talk show. Viewers are interested in what they're favorite stars are up to, and if the interview is funny and informative it can carry the whole show. Or, in some cases, the guest can usurp the host during their opening monologue and carry the show themselves. That's what happened when Ellen (Kate McKinnon) stopped by Ellen and interrupted Ellen to tell a story about some her crazy kitty-kitty-kitty cats. Watch below.
