I bought two of them two weeks ago as well as a Gigabyte X38-DS4 so I could run CrossFire. I mainly went for them because they were blue (which matches my case) and because they have a different cooler.
I'm not sure how many people are aware of this, but a lot of HD3870s (most of them I think) are shipped with a BIOS that has extremely poor fan control - so poor that it causes the cards to overheat. As soon as I got my system back together and Windows installed, I fired up Crysis to see what CrossFire was like. Unfortunately it crashed after 20 minutes. Same story with other games - weird artifacting and strange textures. If you're running one card you can simply set the fan control using RivaTuner, but this doesn't really work with CrossFire and it's very long winded.
So the solution is to flash an updated BIOS basically...
Those of you who are interested in doing this can find the instructions and BIOS here:
http://www.rage3d.com/board/showthread.php?t=33912408
Now my cards get no hotter than 65c @ stock in UT3/Company Of Heroes, and all the artifacting etc. has gone. Hooray for ATi! Did they actually test these cards before they released them?!