Katy Perry

Officers Chen and Bradford respond to a call at the Los Angeles auditions of “American Idol,” and Officer Chen ends up facing Ryan Seacrest and the judges. Meanwhile, Chen befriends…

When the rest of the family seems to lack Christmas spirit, Marge contacts Martha Clause (Martha Stewart).

Actor Kal Penn from the series ”Superhuman”; actor Max Greenfield from the series ”New Girl”; singer Katy Perry.

The Voice goes Live as the top 12 compete in the Final stage of the competition. One artist will go home after a sudden-death sing-off.

In an epic, show-stopping finale, RuPaul crowns America’s Next Drag Superstar.

Kim begins to ease back into her public life, but is blindsided by some upsetting news about Kanye. Meanwhile, Khloe is pressured to mend her strained relationship with Cait; the…

On Graham’s sofa: the legendary Sir Paul McCartney, chatting and performing from his album New; star of Thor 2, heart-throb Chris Hemsworth; Oscar-winning actress Natalie Portman; pop diva Katy Perry;…

Sabrina is arrested at a protest for civil disobedience, but her two-week sentence in jail is made even worse by a prison attendant who claims that they’re old friends. Meanwhile,…

Barney gets emotional when he opens up to Honey about his life. Ted admits to having feelings for Zoey to the group.

Host Cat Deeley is decked out ominously in black as she welcomes us to the show and tells us the judges will have to eliminate one more guy and one…

The award-winning host continues his anarchic talk show. He is joined by America’s pop queen, Katy Perry; comedian Ross Noble; and national sweetheart Cheryl Cole.