David Spade Gave Céline Dion a Pep Talk Before Crashing a Wedding

David Spade told Ellen all about crashing a wedding in Las Vegas during a recent taping of "Jimmy Kimmel Live!" - and how he gave a pep talk to Céline Dion before they surprised the happy couple. Plus, the comedian chatted about what it was like taking his mom out of her element... to a car auction.

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