#1. The Rock and The Undertaker
The Attitude Era was the wildest era in pro wrestling history. During the Attitude Era, The Rock and The Undertaker briefly formed a tag-team on RAW. The year was 2000 and The Rock and The Undertaker were both feuding against the McMahons. On an episode of RAW in December 2000, The Great One and The Lord of Darkness teamed up to challenge the WWE Tag-Team Champions - Edge and Christian.
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The Rock ended up winning the match for his team after pinning Christian following the People's Elbow. Despite winning the titles, The Rock and The Undertaker found it hard to coexist. Their brief run lasted less than a week as they lost the titles back to Edge and Christian in the rematch. Their run was so brief that a lot of fans have forgotten that The Rock and Undertaker were once Tag-Team Champions.