Mark Zuckerberg was Guest with Jesse Eisenberg on "Saturday Night Live"

'Hey...I am the real Mark Zuckerberg'

Lorne Michaels met up with Mark Zuckerberg on, SNL

Mark Zuckerberg joined Jesse Eisenberg and Andy Samberg on SNL

Andy Samberg pretended to be Mark Zuckerberg as Jesse Eisenberg did his monologue on SNL

Mark Zuckerberg was on Saturday Night Live. He was seen at the beginning of the show talking to producer, Lorne Michaels.  After Jesse Eisenberg started his monologue, Andy Samberg came on dressed like Mark Zuckerberg.  Then,  a few minutes later, the real Mark Zuckerberg, (founder of Facebook), came onto the stage to join Jesse Eisenberg and Andy Samberg.  Mr. Zuckerberg stayed on the set until the end of the show, then came back up on the stage to say goodbye to the cast members of SNL.  Very cool!