San Francisco Mayor Gavin Newsom will be bringing himself, his hair and his smile to TechCrunch Disrupt tomorrow, Tuesday, to speak on a variety of topics. This is now officially a TechCrunch Disrupt tradition – at our last Disrupt event in New York Mayor Bloomberg made a surprise visit and spoke about efforts to bring more startups to New York.

Newsom will discuss the startup ecosystem in San Francisco, and will probably touch on Zynga’s massive new 270,000 square foot office lease. He may also mention that he’s running for Lieutenant Governor of California this year.

Attendees can see Newsom live. Everyone else can watch for free on the TechCrunchTV live stream. We’ll update the agenda shortly with details and timing.