'Sex Bomb' Explodes on 'Dancing With the Stars'

BTW -- SPOILER ALERT follows:

The most shocking performance -- Bristol Palin and Mark Ballas -- they Cha-Cha to "Mama Told Me (Not to Come)" ... are you listening Levi? But the best part -- Bristol will rip off some "tear-away clothes" while Sarah Palin sits in the audience!

David Hasselhoff will also be dropping a "Sex Bomb" of his own -- Tom Jones style -- complete with sunglasses and a pyrotechnics.

Here's how it will break down ...

-- Audrina Patridge and Tony Dovolani -- Cha-Cha -- "California Gurls"

-- Bristol Palin and Mark Ballas -- Cha-Cha -- "Mama Told Me (Not to Come)"

-- Margaret Cho and Louis Van Amstel -- Viennese Waltz -- "We are the Champions"

-- Jennifer Grey and Derek Hough -- Viennese Waltz -- "These Arms of Mine"

-- Florence Henderson and Corky Ballas -- Cha-Cha -- "Kiss Me Honey Honey Kiss Me"

-- Brandy and Maks Chmerkovskiy -- Viennese Waltz -- "Cry Me Out"

-- Kurt Warner and Anna Trebunskaya -- Viennese Waltz -- "This Ain't a Love Song"

--Kyle Massey and Lacey Schwimmer -- Cha-Cha -- "My First Kiss"

-- Rick Fox and Cheryl Burke -- Viennese Waltz -- "Crazy"

-- David Hasselhoff and Kym Johnson -- Cha-Cha -- "Sex Bomb"

-- Michael Bolton and Chelsie Hightower -- Viennese Waltz -- "Life After You"