I have been to an EyeCon for the tv show "Supernatural" and it was the best con experience I've had. Kenny and Voni, who run EyeCon, are very friendly, down-to-earth people who try to bring a personal touch to their cons.
They have announced their first "Twilight" EyeCon, and so far, Taylor Lautner has been confirmed. They will probably get more confirmations within the next couple of months, so I thought I'd help out a bit and link to the website.
x-posted to other Twilight comms