I'm so boring. I don't use Entourage, Lotus Notes, or Meeting Maker. However, for those of you Mac users who do, and are looking for some help syncing things over to your iPhone, PocketMac may be worth a look. As a bonus, it will also sync your SMS messages and call logs.
I must once again confess that I'm a total ringtone Luddite. Yup, I'm still rocking Marimba! But for those of you with a Mac who want to kick it old school or drop the latest hawtness straight onto your iPhone, PocketMac brings you RingtoneStudio: