Apple Support -- A friend writes in response to Tonya's query about how Apple would restrict toll-free support to people who buy through the new Apple Catalog: "I used to work on the System 7 upgrade answer line so I may be able to answer your question. Users who purchase items mail-order will have to provide their serial number, which will be their ticket into the support line. If you don't have the magic number, you will be referred to the usual avenues of support, dealers, user groups, and so on."
Mac OS X Services in Snow Leopard
Mac OS X Services let one application supply its powers to another; for example, a Grab service helps TextEdit paste a screenshot into a document. Most users either don't know that Services exist, because they're in an obscure hierarchical menu (ApplicationName > Services), or they mostly don't use them because there are so many of them.
Snow Leopard makes it easier for the uninitiated to utilize this feature; only services appropriate to the current context appear. And in addition to the hierarchical menu, services are discoverable as custom contextual menu items - Control-click in a TextEdit document to access the Grab service, for instance.
In addition, the revamped Keyboard preference pane lets you manage services for the first time ever. You can enable and disable them, and even change their keyboard shortcuts.