#5 Daniel Bryan returns to help Cena defeat the Nexus--2010

In 2010, one of the biggest stories in the WWE was the rise of the Nexus faction. The former NXT rookies turned the tables on the WWE veterans by banding together and forming a stable under the leadership of Wade Barrett.
One member of the Nexus was future Yes Movement leader Daniel Bryan. Bryan had been fired for choking the ring announcer with his own tie. This violated WWE rules about not reminding people of the Chris Benoit tragedy.
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However, a groundswell of support by the WWE Universe and backstage politicking by John Cena led to Bryan's reinstatement to the WWE.
He made his shocking return at SummerSlam, joining with Team Cena to defeat the Nexus. Unfortunately, the Miz would lead to Bryan's elimination from the match, which led to a feud between the two.