I'm gonna do mine like Scorch's post...
Few things:
1. All my stuff is complete (meaning with all relevant manuals/maps, case/box, extras but might be missing advertisement/warning leaflets).
2. All of my stuff is original (no printed covers, etc.).
3. I do have two copies of a few games, usually one opened and one sealed.
4. Not everything is pictured.
5. A lot of my DS, GC, GBA and PS2 games are still sealed so there will be some funny glare on those items.
Here's my back wall, has 2 small cabinets which are sitting on top of 2 large cabinets, 1 of those spiny shelfs, and a small bookshelf.
The small bookshelf holds my trading stuff.
Small cabinet 1 (with the GBA covers) holds GBA games.
Small cabinet 2 (with the DS covers) holds... oversized PS2 and DC games (I'll explain later).
Large cabinet 1 (with the Marvel heroes) holds my DS and PS1 games.
Large cabinet 2 (with the Samus and FF1 characters) holds PS2 and PSP games.
Small cabinet 1. There's a handful of original GB games that are cart only and aren't in my collection list.
Small cabinet 2. This used to hold my DS games until I ran into an issue. My PS2 cabinet ran out of room and this cabinet was really empty... so had to move some stuff around. The biggest problem were the oversized PS2 games. So this now holds my oversized PS2 games (minus .hack G.U. Part 1 Limited Edition and original Guitar Hero bundle) and some DC games. Also, some of the oversized PS2 games with paper based outer boxes (like Ar Tonelico and Growlanser Generations Deluxe) are wrapped in plastic because I didn't want the box bottoms getting scuffed/scratched up.
Large cabinet 1. Regular sized PS2 games and my PSP games.
Large cabinet 2. My DS and PS1 games. Yes, those oversized WD games are wrapped in polyphane (or something like that) plastic. And there, you'll also see my only non-original game: a sealed GH SotN.
Spiny shelf side 1. My Wii, PS3, and XB games.
Spiny shelf side 2. My PC and NES games.
Spiny shelf side 3. Gamecube games. There is no side 4 pics because that side's empty.
The other side of my room. There's my TV (32" 720p Sharp Aquos LCD), Wii, and PS3 which you can't see b/c it's on the bottom shelf of the TV stand (you can see the 80GB MGS4 PS3 bundle on top of the bookshelf though). There's also my gaming computer with 21" Samsung LCD and also my large bookself with all my guides (and other junk)/
Large bookself. There are all my guides, each one in plastic magazine bags and organized alphabetically by system.
Top shelf, left side are my misc guides (a few GC, Wii, N64 and 360 guides).
Top shelf, right side are my portables guides (GBA, DS, and PSP).
Second shelf are my PS1 guides and also small guides (for various systems).
Third shelf is PS2 guides.
I really hate this room though... I've had to reorganize it frequently until I spent a ton of money (like $200 total) and finally settled things during this past winter break. But it sucks I don't have any room for my sound system.