This Week

TMZ.com had the scoop:
"American Idol" will raise the dead on Wednesday and feature a
performance with Celine Dion and ... Elvis Presley?!

While "A.I." teased their "Idol Gives Back" charity benefit by
revealing
that "two of the biggest stars in musical history come together,"
sources at last week's taping tell TMZ that Celine sang Elvis
Presley's
hit, "If I Can Dream" -- with an Elvis impersonator! Ugh! But we're
told
the impersonator was just used as a stand-in, and what you will
actually
see when the show airs is Celine singing with a virtual Elvis -- in
the
vein of Natalie Cole and Nat King Cole's "Unforgettable."