Natalie Portman is the latest celebrity to join our unique baby name round-up: The Oscar winner and her fiance Benjamin Millepied decided on "Aleph" for their recently born son.

People reports that Aleph, alternately spelled alef, is the first letter of the Hebrew alphabet, and has a meaning relating to the "origin of the universe...the primordial one that contains all numbers."

And while Aleph may not be a common first name - it's also the number one in Hebrew - neither is Pilot Inspektor, the name Jason Lee and Beth Riesgraf gave their son after listening to a song by the indie rock group Grandaddy.

Here’s a list of a few of our other favorite celebrity baby names:

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