Hackers & Founders: http://www.hackersandfounders.com is around, but the guy who organizes it is a complete asshat. Really, can't stand the pony tailed bastard.
What you want is Startup Digest. It's the defacto events calendar for Silicon Valley.
You're also interested in hanging out at the Hacker Dojo in Mountain View or Noisebridge in SF. Also, some of the best startup events in SV are 106 Miles, hosted and organized by the most awesome Adam Rifkin.
<full disclosure>I'm the organizer of Hackers & Founders...</full disclosure>
In general I'd recommend plancast, meetup.com, and startupdigest to find out about events like this.
Actually, I put together a list of goings on bet April 15th and May 15th for TechBA: http://www.google.com/calendar/embed?src=tristankromer.com_2...
EDIT: Ok, I see what this is about now–but ... it kind of sucks that this was posted only 4 days before the event (especially when the blog post was from Nov.).
Being outside of SV but close enough to drive, events like this interest me but it's hard to keep track of them (let alone of their quality). I know lanyrd is trying to fill this space (sorta) but this event isn't there.
I'm just babbling now, but my point is: I want to network, learn, and hack with people in the Bay Area. How the heck do I know what events to come to and when they are?