In this May 8, 2009 file photo, Adam Lambert, a finalist on the singing competition series, 'American Idol,' performs for fans during a visit to his alma mater, Mt. Carmel High School in San Diego. [Agencies]

The episode kicked off with "Night at the Museum: Battle of the Smithsonian" stars Ben Stiller, Hank Azaria, Bill Hader and Jonah Hill starring in a plug masquerading as a skit about the "Idol" judges' desk being inducted into the Smithsonian. It wasn't a joke. The perch will be on display at the Smithsonian Institution Building in the coming weeks.

Before the results viewers saw Alicia Keys urging fans to support her charity, a 15-year-old Rwandan rapper named Noah, sixth-season champ Jordin Sparks, videos of the final three singers' trips to their hometowns and an over-the-top performance by Katy Perry.

Gokey just wanted to cut to the chase.

"I think we've had enough suspense, enough commercials, just enough playing around," he said. "Let's just get to it."

"I want to see Katy Perry!" Lambert exclaimed in response.

The feeling was apparently mutual. Perry made her love for Lambert no secret. The "I Kissed a Girl" singer crooned her latest single, "Waking Up in Vegas," with a troupe of glittery showgirls while wearing a scantily clad Elvis-inspired ensemble that was initially covered in a cape emblazoned with Lambert's name.

Either Lambert, a 27-year-old theater actor from San Diego, or Allen, a 23-year-old college student from Conway, Ark., will be crowned "Idol" next Wednesday. Cowell said Allen's totally stripped-down version of Kanye West's "Heartless" on Tuesday made him a contender for the finale.