What does MobileMe provide?
MobileMe is a suite of features that works with Mac OS X Mail, iCal, and Address Book.  It also works with Mail, Calendar, and Contacts on the iPhone or iPod touch.  MobileMe also works with Microsoft Outlook on Windows based PCs.

Push Push Push
MobileMe comes with push features built right in for email, contacts, and calendar.  MobileMe will "push" updates to the "cloud" and then push updates to your Mac, iPhone, iPod touch, and/or PC.

What can I do with MobileMe?
MobileMe enables you to synchronize data on multiple devices such as Macs, iPhones, iPod touch, and PCs.

Easy Access and Easy to Use
Easily access your email, calendar, contacts, and photos.  You can also access files you store at me.com. The MobileMe applications appear and behave similar to desktop applications as they are loaded with features.