If I remember correctly, originally WSR worked with a peripheral, Motion+. I don't see any reason why such peripheral could not have been used last gen.

Kinect titles, I guess. I don't think that kind of technology was available back then. Same can't be said about the Wii remote given how it originally was planned as an add-on for the Gamecube.

I suppose the argument could be made that pretty much everything would be possible on last gen consoles, but that doesn't mean that they'd turn out the same. Take MAG. Online multi-player FPS games were possible on last gen consoles. I'm sure MAG could be squeezed on there and have 8v8 or 16 v 16 at a push or something. But the whole point of that game was 256 player battles. It wouldn't be what it was if it were just watered down for last gen. I'm sure there's plenty of similar examples out there.

I get where you're coming from with the bells & whistles thing but personally I don't think there's anything wrong with improvements in this manner. I'm sure Toy Story could have been animated in the same way as any preceding Disney film, but there's a certain enjoyment to be had from viewing it in the way it ended up being presented. Watching the Star Trek universe get further brought to life as production values got better is another example I'd put forward.

Skyrim comes to mind, though, considering they managed to make Morrowind for original Xbox, Skyrim would be, at least in theory, possible there in some form too.

Most Wii games.

Including all the advancements in graphics, effects, data, and physics?:

- Halo 4
- Skyrim
- Witcher 2
- Forza Motorsport 4
- RAGE
- Alan Wake
- Gears of War 3
- Uncharted 2
- Metro 2033
- Grand Theft Auto IV
- Crysis

List just gets bigger and bigger. The whole point of new consoles is to expand on how much information games can contain and run. You'd have to strip lots of stuff like graphics, resolution, FPS, effects, on screen data, etc.

PSN games? Download your 800 MB PSN game now..Please insert 100 8MB memorycards...

There were no wiimotes last gen, motion+ cannot work on gamecube controllers although I don't have any links or sources to that info but you can try them for yourself and see if they are compatible.

Nah, it's full size. 

http://www.popularmechanics.com/technology/digital/gaming/rendering-god-of-war-iii

When God of War III comes out on Tuesday, March 16, for the PlayStation 3, gaming will have its own Burj Khalifa—Kronos, the 1600-foot-tall boss.

At the risk of banging an old and extremely battered drum, God of War III's use of scale is another example of a technical trick that, according to Filippov, only the PlayStation 3 can pull off. Although previous games, including God of War titles, have featured large enemies, the new game's Titans are presented not as scripted events or optical illusions. They are fully-rendered, exceptionally detailed character models, with stable proportions (Kronos's hand doesn't simply swell as it approaches, as the Colossus's hand did) and shifting textures that push the limits of the PS3's hardware. Although the Kronos fight was a technical challenge, a sequence where Kratos travels the length of the Titan Gaia was even more complicated. "The Gaia scene is an example of something that wouldn't fly on the [Xbox] 360," Filippov says. "The reason is you need to recalculate that entire surface—all of Gaia's skin—and you need to calculate collisions for all the dozens of enemies climbing on and sticking to that surface." 

In that particular scene, Kratos has to navigate the craggy, earthen skin and foliage covering Gaia, as up to two dozen enemies at a time make their own way around the Titan's body features to attack him. This is where the PS3 shines, Filippov says. As Gaia's body moves (she's locked in her own fight, even as you're fighting across her) the Titan's skin conforms to those movements, textures shift, and the enemies' artificial intelligence reassesses the best path to take. Each of Gaia's actions forces a recalculation of the entire environment and the characters that inhabit it. In fact, what might be the most impressive feat yet of the console's famous synergistic processing units, or SPUs, is what you don't see—limbs and blades drifting through the wildly changing environment. The entire scene, which includes multiple moments when the camera zooms out until Kratos is barely a pixel in size, features realistic collision detection, as dirt, trees, leaves and combatants (both titanic and comparatively tiny) crash into each other. The result is a scene that not only tops every previous game in terms of epic-scale characters, but uses the PS3's much-vaunted processing power to focus on, quite literally, a million minute details. After all, it's not the size that matters. It's the number of SPUs you have handy to constantly recalculate it. 

Read more: God of War III Colossal Enemies - God of War III Review - Popular Mechanics 

Most PS3 Exclusives especially games like Heavy Rain and LBP.

Games like Battlefield 3,Witcher 2 and Skyrim aren't still possible on current Gen consoles.At least not in the way they are meant to be so i count them too cause they have insane PC Counterparts.
Battlefield 3 is a complete different game on PC and Witcher 2 on 360 doesn't even touch the low settings of the PC Version.Skyrim on PC completely different in terms of size thanks to the PC Community...Tons of more towns,Weapons,Monsters etc aka the TRUE Skyrim.

But at the same time you can say Open World Games like Skyrim or GTA could have been done - Its just they wouldn't look as great if you take the "core" and unmodded versions.
At the same time "simple" things like Uncharted 2/3 couldn't have been done - Too much motion capturing and effects and perfect executed gameplay.Im not even talking about those insane graphics.