Apple's Screen Sharing service provides a convenient remote control interface for Mac OS X support. Screen Sharing is essentially VNC under the covers, so you can readily share screens from a Windows box via free VNC clients such as TightVNC, although you lose some of Screen Sharing's fancier features like scaling and autoscrolling.
Similarly, Apple's Time Capsule provides a sophisticated centralized backup system, with users able to retrieve files at will through Mac OS X's powerful Time Machine graphical browser. Alternatively, traditional backup products support Macs as well: Symantec Backup Exec, which backs up xServe storage that in turn contains desktop backups, and EMC Retrospect, an end-to-end desktop backup product. The future, however, may belong to cloud backup tools like Jungle Disk, which saves to Amazon's Simple Storage Service.
The future of management may not revolve around the desktop
If Occam's Ted Smith is on the right track, desktop-oriented administration may be nearing the end of its life as a management strategy. Occam's application virtualization approach reduces desktop management chores to basic security and patch control, with application security and configuration residing in the datacenter. Desktops are little more than disposable terminals to those applications, with users free to tailor their individual workstation with personal productivity tools. Another possible future is full desktop virtualization, in which the user's access device is a mere thin client with the desktop stored and executed on a datacenter-resident virtual machine.
That future is still a few years distant, though, and Mac proliferation is not waiting for it. To service user demand for Macs in the near term, avoid treating the Mac as just another Windows box. By recognizing the Mac's unique advantages -- which is what draws users to it in the first place -- you'll be better positioned to select from the rich and growing palette of Mac management tools.