Tiger's Parental Controls for Finder, Mail, IChat, Safari, and the new dictionary/thesaurus (a separate app that lets you look up words without an Internet connection) are strict, but there are some holes. For Mail and IChat, for example, you can add individuals with whom your child can communicate, but once people are white-listed, the OS stops monitoring the contents of the messages. That means they can include every profanity known to man and still make the cut.
For Internet surfing, the controls work only with Safari, and parents have to add every site a child is allowed to visit as a bookmark. I even had to add the highly benign PCWorld.com. This feature may work well for little children but is sure to become limiting for older kids.
Tiger makes makes it easier to deal with repetitive actions like batch-importing photos with its new Automator application. It is distinct from AppleScript and is meant to be far easier to use, although our short time with it didn't yield very fruitful results. It does have a learning curve. Apple includes 175 prebuilt actions, and more are available on its Downloads page as well as through third-party Web sites such as IThink Automator and Automated Workflows.
Finally, cross-platform folks will like the improved support for faster, more seamless networking between Mac and PCs. Apple loves slide shows and has added support for them to the Finder, Spotlight, and Mail, letting you, for instance, view a series of e-mail image attachments as a slide show. Apple has added a .Sync preference to the .Mac preference pane to let you easily sync contacts, calendars, keychains, bookmarks, and mail information to other devices through .Mac.
Bottom line: Mac OS X Tiger is a giant leap over its predecessor, Panther. In my tests the operating system seemed stable and relatively bug-free, and performance was excellent on both my new test system and my aging Powerbook. For me, the Spotlight search and Smart Folders features are worth the purchase price. That said, if they don't wow you, RSS readers and widgets are available elsewhere, and there's always AppleScript as a more technical alternative to Automator.
Narasu Rebbapragada