Discussion on:

Connect Android to Windows and Samba shared directories

It's one of the absolute must-haves for Android. I use it on a phone (no tablets for me).

Ideal for transferring files from network shares to your Android device. Also a great device for navigating your files in general - my Windows usage is mostly centered around Explorer; ES File Explorer is the Android equivalent. This should be part of Android, not a separate app.

For tablets to really take off in the corporate space, they need to be able to easily access resources on the network like desktops and laptops do. I run this on my tablet and can then pull up spreadsheets, docs, etc from the network without having to transfer them via cable or dropbox.