This is probably a little bit too geeky for most, but one of the things I enjoy doing almost as much as installing a new operating system on my Mac, is reading John Siracusa's exhaustive review of the new OSX on ars technica. Just finished reading his Mountain Lion review, and, as always, it did not disappoint. Some people feel they need to prepare for the review, and they have (once again) created a video for this purpose (it seems John himself appears in the video this time around).