Your first idea where you guide lemming type people somewhere is actually a real game . It was a lemmings game on ps2 which used eyetoy.

Do you want a game i´m positive it will be made for Natal?

Black & White 3

In B&W games, you are a hand...so, do the math ;)

I  have already played this game its called "operation creature feature" and its exclusve to the ps3 and the ps eye

lol sorry ps fanboy in me

sony had the ps eye for years and done very little with it so im geniunely interested in what ms do with natal

I just read the review for OCF and it is nothing like what I am talking about.  All that game did was project a transparent image of you in the background and creatures were attracted to movement.

So, on a 2D plane, something like Patapon?

Actually, yes, that would work well.

HOLY CRAP.  I swear I had no idea baout this game but it friggen talks about doing the same stuff I am.  Granted it has difficulties due to lighting that Natal will not have, it isfreakishly similar to my idea.  I had Lemmings in mind when I thought of it, I just did not know that there was a PSEye version out.

http://www.eurogamer.net/articles/r_lemmings_ps2

"Yet, from what we can take from the brevity of the experience, it almost, almost works. Throwing away all the traditional job icons, you instead direct and ferry Lemmings alongside manipulating scenery with your body. Bridging gaps with your hair, blocking paths to danger with the side of your head, uncomfortably cupping Lemmings in the crux of your elbow as they threaten to spill to their death, and - most satisfying - blatting the lot of them with a swat of the hand when they refuse to do what you want: it can all be done. As can waving your arms at certain hotspots to flick switches, wind up catapults, and clear blocked paths, etc.

Because the Lemmings regard you as an obstacle on a 2D plane, you have to be constantly aware of your body. It's not like most head-on EyeToy games and having dozens of vulnerable little sprites walking all over the screen requires a physical strategy. Pop up on top of them and your bumbling bulk will crush them out of existence. Instead you have to plan, carefully contorting your frame - though not stupidly so - to accommodate the layout of the levels, often ducking below the TV and poking necessary limbs up like a fleshy periscope.

It can be frustratingly imprecise at times, not at all helped if your lighting and background conditions aren't perfect. And if the number needed in the exit to win is lenient, it's in opposition to the seemingly random times said bad lighting allows a group of Lemmings to leap out of your cupped hands and dash themselves on the harsh rocks of your shoulder bone.

Yet for the times it does work, it's great. You'll get a little kick out of Lemmings marching up the slope of your finger enough times to be satisfied with the meagre portion of levels provided. Though, let's be honest, this is nothing more than a tech demo; a proof of concept for what might be possible in the future."

It doesn't have any depth information being used though.  If it senses your body, it places it in the game space.  This is different than I was thinking.  But interesting none the less.

I am going to start replacing the OP daily, it appears that it is the only one people are reading.

Here is the one from day 1 posted here to start the refreshing of OP on a daily basis and not lose this post:

Here is a platforming/puzzle game that could be done with Natal. It would be Lemmings esque(creatures constantly walk forward unless something interacts with them), where your body and perhaps voice help them to navigate the environment.

For example, if there is a hole that they need to cross, you can either place your hand in a position that the creatures can walk across(rotated in any direction, slanted upwards to go up, downwards to help them go down), or you could do it like an elevator, where they walk on your hand and you move it upwards(but not too fast, otherwise they might leave your hand when your movement stops, due to a nice physics engine :) ) If it is a long way up, you might have to use your other hand to stop them from going forward, otherwise they will walk off your hand. Or perhaps cup them in your hand.  You could even use your entire arm if you needed more space to carry more creatures across.

You might could catapult them, but doing it with too much force would kill them.  If there is a catapult on the map, you could pick up one of your creatures and place it in it, and them you would have to operate the machine with your hands.  Pull a lever, pull back something, etc.

You could pick one up and then use verbal commands to change him into a different job, or give some sort of different directions to execute.

You could defend the creatures from enemies by grabbing the enemies and killing them.  Or protect them from falling objects by placing your arm over them.  Or commanding your creatures where to attack by pointing.  Or verbally saying duck so that all of your creatures duck or defend from whatever is coming.  Or pickup up a piece of the environment, such as a rock wall and using it to protect them and swing off enemies.

You could grab the environment in certain circumstances and alter it to solve puzzles and help your creatures escape. Destroy blocks in the way, use keys, give your creatures items from the environment, throw things. It could become trying to multitask getting your creatures out safely and altering the environment as necessary.

It could be mapped to where your body position determines the screen's X position. For example, you move left and the screen moves left, you move right and the screen moves right. This could be done with the hands if people do not want to stand. But standing gives an advantage of being able to use your hands while scrolling the screen.

This idea could be taken a long way I think and provides a different experience from anything out there.  Almost as if your actual body was a piece of the environment, used for creature to crawl over and interact with the environment.

If they do this then I'm claiming full credit for the idea, as I posted it on these very forums before E3.

If I could play my beloved DDR with Natal (no dance pad) I would be sold.

And it could register more than foot movement.