Lets see
In my "LaCie 2" Drive in the root there is 20 items, 209.4 GB available
In the root
Folder:Backups.backupdb
File:rob 2 release.rar
Folder:School
Folder:First season of Breakout Kings I downloaded from iTunes
File:Science.docx (contains a history of all my experiments)
Folder:Skyrim (contains all my skyrim stuff)
File:Tron Legacy (that movie, got it on iTunes)
File:Image.tiff (image of cheese6 I messed up in photoshop, used to be in the TribalRP folder)
Folder:Adventure Time (I downloaded every single episode of Adventure Time
Folder:Blockland (I found my first Blockland folder from v8 on my old computer, put it on for nostalgia)
File:gamemode_minecraft.zip
File:cheese pickin g nose.png (me and him were video chatting playing truth or dare, fill in the rest)
Folder: ubuntu (30GB, it contains all the operating systems I've bought and downloaded)
Yeah, Im a boss. In total that takes up about 800GB. Ill plug in my LaCie 1 in a sec
Edit
Just plugged in my LaCie 1, time to list
File:300 (The movie, bought)
Folder:Aptana Rubles (No idea)
Folder:Backups.backupdb
Folder:blockbastion
Folder:Blue Crab (what the forget is this)
Folder:BrianHosting (old backup of my site before I deleted everything on it)
Folder:Bunch-O-Add-ons (contains about 5,000 addons.)
Folder:CaveJohnsonLemons(You dont want to know)
Folder:Test (I have a few of these)
Application:Final Cut Pro (Bought, backed up for obvious reasons)
Folder:Game Works(the forget)
Application:[Removed]
Folder:Mario Paint Composer OSX (oh yeahh)
Application:Microsoft Silverlight (the forget)
Folder:Monopoly (you really, really, really, do not want to know)
Folder:NetBeans(no idea)
Folder:New Movies(some Final Cut stuff)
Folder:Old Movies(^^)
Folder:Other Movies(look at Monopoly)
Application:Parallels Desktop(yea, i bought this and never used it so i just backed it up)
Application:PHP Code Tester(this is about 2 years old, when I was a noob at PHP and I needed to test stuff locally)
File:PHP Code Tester.zip(I tried to click on get info but i clicked archive ^)
Folder:PixelStuff (Contains all my pixel creations)
Folder:Random Stuff (well I guess I wont be going to sleep tonight)
Folder:School
Folder:[REDACTED]
File:[REDACTED]
Folder:System_BlockOS (Build 5 of BlockOS, weird)
Application:Vidalia(idk what this is)
Folder:Virtual Machines (I assume this is some VMware thing)
Folder:VirtualBox VMs (I assume this is some Virtual Box VMs)
There is 41 items in that folder, and only 27.1 GB available in it.
Both of those I posted are 1TB backup drives.