With the recent 10.5.2 update to Leopard, Apple applications now support the Sony a700 RAW format!! I didn't think it would bother me much when I first purchased the camera, but it has grown to be a major pain to have to preview the jpg files, write down the image number, then open the RAW file in Adobe Camera Raw. Now I can even scroll through the RAW files using QuickLook. EXCELLENT!
Apple camera support page