Plaxo 3.0 is available
Plaxo is an online address book and calendar manager that can synchronize your information between Outlook, Google, Yahoo!, AIM, your Apple apps and more. Today they released version 3.0 which includes a number of improvements, like:
Google Calendar synchronization
Calender "countdowns" to important events
Improved reminders
Best of all, Plaxo is free. It's still in beta, so take that into consideration before you try it out.