In Part II of the Season Finale, the winner of the title of the "Last Comic Standing" is announced.

This week, Cat introduced us to Nigel Lythgoe, Mary Murphy and Brian Friedman as our judges. Then, the dance performances started. This week, each dancer performed with every other dancer.
Heidi and Travis performed a disco routine and then Donyelle and Benji danced the Viennese Waltz.
Next, Cat showed a clip of the dancers going to see "Step Up."
Heidi was the first to perform her solo. Then, Benji and Travis danced hip-hop, Donyelle performed her solo, Travis danced solo, Heidi and Donyelle performed Broadway, Benji performed his solo, Donyelle and Travis danced contemporary, and Heidi and Benji performed a salsa dance.
The evening closed with the entire group dancing pop.
Afterwards, voting was opened up to the audience.

A wild-card competition features 10 deserving but overlooked acts from the semifinals competing for two additional spots in next week's $1 million finale. Among the performers getting a second chance are: Nathan Burton; Leonid the Magnificent; All That; Natasha Le; Corina Brouder; Jessica Sanchez; Bobby Badfingers; N'Versity; Quick Change; and Alexis Jordan.

Inspired by an internet story, The Mythbusters take on the controversy surrounding these fizzy fountains. Then they try and find new household-product tricks that could be the "new craze". Meanwhile, the Mythterns tackle the myth that a single postage stamp on a helicopter blade disrupts the system enough to take it down.

This challenge starts with a major switch - the models will choose the designers. This weeks challenge will find the designers taking fashion icons that have helped shape the world of fashion over the last century and giving her a more modern look. Pictures of 10 fashion setters - from Twiggy to Cher to Jackie O. - are sitting in the work room where the models will select an icon for their designer. The key word is modernize, not replicate or make their design retro.

The winner of this challenge will win a Tresemme photo shoot for his/her model, wearing the designer's outfit, to be published in an upcoming issue of ELLE magazine.

A female atheist spends 30 days living with a fundamentalist Christian family.

While investigating the virus that had been implanted in Vanessa, Blade learns about the murder of Flannigan, a cop who helped care for him when he was a child.

TONIGHT: The author of Guinness World Records 2007, Craig Glenday!

Tonight cultural anthropologist Alexandra Robbins, author of The Overachievers: The Secret Life of Driven Kids.