By FOXNews.com The late-night hosts came together for a light-hearted commercial poking fun at their long-standing rivalry. Jay and Dave stole the show! Bitter late-night rivals Jay Leno and David Letterman — with peacemaker Oprah Winfrey — stunned Super Bowl viewers last night by joining forces in an ad for CBS’s “Late Show …

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Letterman and Leno Team Up With Oprah for Super Bowl Ad