4+
Uncharted and Resistance 3, Ratchet and Clank All 4 One, and ICO Collection.
Vita with Uncharted and one more game(If released this year)
Finally, debating on picking up a DS and my personal Wii along with a few games each.

as a PS3 owner, there is too much awesome. batman, child of eden, bleach, uncharted, sonic, deus ex, for Wii....Zelda.

About the same given I might not buy half the ps3 games you listed, but I would add in Skyrim and few select others, well for Wii I got Zelda and Kirby. 

However 3DS is the most right now. 

I am somewhat shamed to say that it will definately be over 25, and right now I am looking at a maximum or around 38 BEFORE dastardly steam sales! This is a list of all the games I fully intend to buy, but likely will miss out on a few:

Xbox 360

Gears of War 3
Forza 4
From Dust
Dark Souls
Halo CEA
The Cursed Crusade
Arcana heart 3
Dead Island
Rise of Nightmares
Sonic Generations
Star Wars Kinect

games that I want that have already been released
Knights Contract
BlazBlue: Continuum Shift
Venetica
Grey Matter
Child of Eden
The Scourge project
Hunted: The Demons Forge
Vanquish
Dynasty Warriors 7

3DS

Cave Story
Super Mario 3D
Kid Icarus
Heroes of Ruin
Zelda Ocarina of Time

PC

Garshasp: The Monster Slayer
Stronghold 3
Might & Magic Heroes VI
A Game of Thrones Genesis
Sengoku
RAGE
Deponia
Battlefield 3
Skyrim
Star Wars the Old Republic
Sword of the Stars 2
Deus Ex 3

What makes it worse is that I intend to buy the 'highest' edition available e.g. Limited edition/collectors edition, Legendary Edition etc... and that for the Kinect games I also need to buy a Kinect sensor too :( I can only hope I manage to get that extra time I'm after in work.

I am definitely getting:

Zelda SS
Xenoblade Chronicles
Mario Kart 3D
Kid Icarus Uprising
Super Mario 3D

I'll probably add to this later on

Money is tight I'm saving up for Mass Effect 3,but maybe I can get Uncharted 3 and God of war origins,maybe the Ico collection if I'm lucky.

uncharted 3, dark souls, and batman AC for sure as those have already been pre-ordered.

probably others as well depending on time. R&C all 4 one, child of eden, ico/SotC if it is out this year, twisted metal, dead space 2, mass effect 2/3, halo CEA round out my second tier of gaming prospects.

maybe a vita this year assuming it launches in the US this year. i don't really want to be too early of an adopter but at the same time i am excited if for no other reason than to be able to finally play VC2. we'll see.

i also have a ton of digital stuff too. i think i need to cancel psn+ just to i don't play so many digital games.

Money shouldn't be a problem on the whole, but I think I'm going to try and moderate myself. Not because I want to, but I simply won't have enough time to play through everything I want, and I still have a bunch of games I ought to play through.

The short answer then is probably 4-6 (for now anyway), but god damn do I want more!

Six. Possibly more, but my definite purchases are Earth Defense Force: Insect Armageddon, Child of Eden, Disgaea 4, Dead Rising 2: Off the Record, Uncharted 3, and Saints Row: The Third.

Definitely, RAGE, Dues Ex and Skyrim.

It also depends on discounts for older games come christmas and whether or not VITA is released in Canada.

edit: ALSO need to add SILENT HILL collection and Uncharted 3