At work one of the NT admins wanted to know the file size of a bunch of files on various servers. It's a trivial task, he could search the whole domain, check each server manually from Explorer, or script it.
On a POSIX like platform, it's a trivial one-liner, easily done in shell/awk, or any other scripting language like Perl. On Windows, DOS just can't do it, so we installed ActiveState Perl, and then a I gave them a small script to do it. I'll probably do some more scripts for them, they have serious space issues, and we're using Perl to find duplicated files in the main filesystems, and deleting files over 30 days old on transfer file systems.
It's tasks like that, that remind me why I use Perl and why I mostly work on POSIX like systems.