Tickets to midnight showings of James Cameron's Avatar are already selling on movie sites─that's four months in advance, or nearly three times the industry standard of 45 days for presale tickets, reps for the sites confirm. MovieTickets.com says it's selling the tickets to Thursday midnight showings in 41 IMAX theaters nationwide, from Olathe, Kans., to Arcadia, Calif., and Fandango is offering them nationwide, as well.

Avatar's own Web site already crashed last week, after too many fans sought tickets to the 16-minute preview of the film, and the trailer just broke the record for the biggest debut ever on Apple's popular movie-trailer site. Apparently the AMC movie chain, the driving force behind the presale, saw that surge and decided to let tix out early: they went up for sale last Friday, Aug. 21, the same day as the preview.

So, do you have yours yet?