De Niro's got 99 problems (Jay-Z not returning his calls is just one)

Oooh, we love a good celebrity feud. According to the New York Post, Robert De Niro has accused Jay-Z of being disrespectful after the rapper failed to return the actor's phone calls. Jay-Z approached De Niro last weekend at Leonardo DiCaprio's 38th birthday party, where the legendary actor told the singer (according to a witness) that "if somebody calls you six times, you call them back. It doesn't matter who you are, that is just rude." Apparently, Bob was angry that Jay-Z had failed to provide details about a track he was recording for the Tribeca Film Festival. We can only speculate, but we're betting De Niro framed his accusation as, "You not talkin' to me?" [Source]

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