Apple's latest upgrade to it's 10-year-old (plus) OS-X operating system is a success by all accounts. It's inexpensive at $20, and while it does not add many new items, it does put a nice polish on existing features and smooths out some of the rough edges from the previous version, 10.7 Lion. The latest OS X 10.8 Mountain Lion should be a must have for most Mac users then. One interesting feature they did add is voice-to-text functionality, using Siri technology (although Siri does not appear "in person"). ArsTechnica has a giant review of the whole shebang.