Come see James Cameron's Avatar in 3D with us on opening day this Friday in San Francisco. As with past screenings (Iron Man, Star Trek, Batman and others) we're footing the bill. We just love to see all our happy readers in person every once in a while.The screening is at 3:15 pm (seating opens at 2:30) at the AMC Metreon 16 (4th and Market) in San Francisco this Friday December 18. Tickets are available here at Eventbrite (we're releasing a portion now, and more later). We're asking for a charitable donation of $5 per ticket, and 100% of the proceeds will be given to the UCSF Foundation or Malaria No More (your choice).Like we said, we've got the tickets covered. If you'd like to sponsor the event by buying attendees popcorn and/or a soft drink, email us at sponsors@techcrunch.com.