Having survived last week's competition, the Top 10 boys perform again for America. After the show, the viewers will vote for their favorites. Who will keep singing, and who will go home?



Performing Tonight are:

David Archuleta

Jason Castro

Robbie Carrico

David Cook

Chikezie Eze

David Hernandez

Michael Johns

Luke Menard

Danny Noriega

Jason Yeager

The competition heats up as only eight players remain. One team is surprised with a special trip to Las Vegas, but will they maintain their diets and workouts in Sin City, or give in to temptation? Then, in a very emotional elimination, one unsuspecting player makes the ultimate sacrifice for their team.

Chuck babysits Gracie while Kelly gives the eulogy at a funeral for a former member of WURG.

Power of Veto is held.

Without consulting with Cheryl, Jim transforms the garage into a cigar lounge and donates the kids' old clothes and furniture to charity. When Cheryl informs Jim that she is pregnant with twins, he is forced to retrieve all the stuff that he gave away, and has to deal with the fact that he is going to be a father of five.

A look at the 2002 discovery of a four-winged crow-sized dinosaur fossil dubbed Microraptor, which has rekindled the scientific debate over the origins of flight. Included is a wind tunnel test of a "flight-ready" model of the 130 million-year-old Microraptor.

Dale returns to Jericho with supplies and shocking news about a virus thats rapidly spreading west of the Mississippi. Dale also returns with a small shipment of vaccines to fight off this bug, but is rapidly confiscated by Ravenwood. It is up to Jake to come up with a plan to get them back. Meanwhile Hawkins takes drastic measures to conceal his true identity after Major Beck finds out some information on him.

Haley, Brooke, Peyton, Lindsey and Mia get locked in the Tree Hill High library; Brooke tries to stand up for her mother; Lucas and Nathan try to tell their loved ones about their indiscretions.

When Gracen refuses to support Marmaduke's newest business venture - a lawn-cutting business using a flock of sheep - Marmaduke moves in with Laird, who enjoys being a "dad" to Marmaduke, but this "father/son" bond causes a rift between him and Gracen.

Paul is pushed to the edge by Alex's knowledge of his personal life.

A look at myths and mysteries concerning the universe. Includes a possibility that life can be sustained on Mars, an examination of time travel, and the theory of a Dark Star as a companion of our sun. Also, a closer look at the Big Bang theory.

Tonight, former Secretary of State and author of Memo to the President Elect: How We Can Restore America's Reputation and Leadership, Madeleine Albright.



Jon begins tonight's show with a recap of his hosting of the Oscars along with commentary from Senior Hollywood Correspondent John Oliver in a segment called "Hooray for Oscarwood!"



Finally, "Indecision 2008" continues as Obama steamrolls Clinton in a number of previous primaries in the last few weeks. As Jon notes, Hillary's strategy is to be gracious one moment, only to be disdainful the next.

On the cover of a promotional calendar featuring the staff dressed as heroes of American History, Ingrid soon displays her ignorance about her character Betsy Ross. It is soon discovered Ingrid is an illegal alien from Poland. Amy is jealous that Ingrid was chosen for the cover and attempts to do something about the Greens & Grains undocumented workers. Only Ingrid is not going silently and the rest of the staff revolts to prevent Amy getting the upper hand.

Tonight Stephen welcomes literary critic and author of Finding Oprah's Roots: Finding Your Own, Henry Louis Gates Jr.

Australia's most deadly feud starts when Carl Williams is caught double-crossing the Moran brothers. The underworld is in uproar over the mystery source of cheap drugs. A kidnap goes from farce to disaster when nobody wants to pay the victim's ransom. The police have a surprise breakthrough in their assault case against Jason Moran.

Renji continues his battle with Szayel Aporro while Ichigo faces off against Ulquiorra.

Kevin revisits David and Leonie in Puglia, Italy three years after they last featured on the show.

Owen is determined to find absolution, can the girl on the rooftop help? How about retrieving an alien device? And will Toshiko help him?