The Signal School at Fort Gordon just bought a bunch of iMacs with a Windows OS (I don’t know if it’s virtual or just a dual-boot—I assume the former).
Macs are pretty cool, but I wouldn’t have the first clue how to do even a quarter of the things on them that I can do on a PC. Now that I’ve been schooled in Active Directory, Exchange, Sharepoint, SQL, Visual Basic, etc., it would make it that much harder to change over.
Think of it this way: As a general rule, tasks that take 5 mouse clicks to accomplish on a PC, take 2 mouse clicks to accomplish on a Mac.
It's just different flavors. Active Directory is easier on a Mac because it was designed to work with LDAP/Kerberos. AD is just an implementation of that in Microsoft land, although it causes problems by not being native to the system like NTLM, and of course has some proprietary extensions (embrace, extend, extinguish, the Microsoft way).
Instead of Exchange you have Mail Server. Or Snow Leopard is supposed to work seamlessly with Exchange.
Sharepoint. That's an interesting one. I haven't looked at other portal software lately.
SQL, of course there are many other database engines out there. The languages and datatypes are 90% the same, as are the larger concepts of management. It's just learning the differences of commands, best leveraging that platform's abilities, etc.
Visual Basic, what, are you high? Why are you still using that crap? :)