In the highly competitive arena of celebrity rivalry, few moments are as legendary or as ruthlessly funny as the final round showdown between actress Anna Kendrick and actor John Krasinski on the television show Lip Sync Battle in April 2015. What began as a confident rivalry quickly devolved for Krasinski when Kendrick unveiled a devastating, personalized “final move” involving his wife, Emily Blunt.
The Setup: Confidence vs. Preparation
The competition, which aired as Episode 4 of Season 1, saw the two stars, who previously worked together in Up in the Air (2009), trading playful barbs and elaborate routines. Krasinski, known for his charismatic confidence, had already impressed the audience with a rendition of Tina Turner’s “Proud Mary” (and previously, NSYNC’s “Bye Bye Bye”).
Kendrick, however, was prepared to deliver a “sweet slap” to his ego. She took the stage to perform One Direction’s hit song, “Steal My Girl.” Her performance was not just a lip sync routine; it was a targeted, theatrical tease aimed directly at Krasinski, playing on his public image and relationship. Kendrick perfectly executed the song, directing every playful lyric at her opponent, and even wore a t-shirt featuring a heart-shaped picture of herself and Blunt.
The Notable Event: The Final Move
The performance was already a highlight, but Kendrick’s true genius was revealed during the song’s climax. As the music swelled, Kendrick transitioned from teasing to a full-blown declaration. In the ultimate strategic move, Kendrick did more than just dedicate the song to Krasinski’s wife; she literally pulled the internationally famous actress Emily Blunt onto the stage.
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The Unexpected Guest: Emily Blunt, who is married to Krasinski and is a celebrated actress in her own right, walked out to a roaring crowd.
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The Reaction: Krasinski, watching the scene unfold, instantly and utterly “collapsed” in shock and hilarious defeat on the stage floor. His reaction, a mix of disbelief, laughter, and resignation, was instant internet gold.
This final, flawless move was arguably the most devastating personal maneuver ever executed on the show. Kendrick successfully turned a friendly competition into a moment of pure, viral comedy, proving that preparation and a well-timed celebrity cameo beat pure confidence every time.
Data Point: The Episode’s Legacy
The episode featuring the rivalry between Kendrick and Krasinski is often cited as a high point of the entire Lip Sync Battle series, which was a ratings success for the Spike (later Paramount) network.
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Viewership: The episode garnered over 1.75 million U.S. viewers.
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The Winner: While the “Steal My Girl” move was the highlight, Kendrick ultimately won the battle against Krasinski, in large part due to her performance of Jennifer Lopez’s “Booty,” which featured an unannounced appearance by J.Lo herself.
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Viral Impact: Clips of the “Steal My Girl” performance and Krasinski’s collapse remain some of the most shared and quoted pieces of Lip Sync Battle content, cementing the moment in pop culture history.