Here is an example of something you can not do on 360 minecraft
Here is another example of something you can not do on 360 minecraft.
Here is yet another example of something you can not do on 360 minecraft.
Do you see a pattern here?
Mods just do awesome things...
All kinds of things that that you can do on the computer version, but can't in this because it is both an older version and on a console.
As for what coolcly was saying about industrialcraft, that mod is included in the technic pack which is 10 kinds of awesome in so very many ways. Nuclear reactors, wizard stuff, and all kinds of things.
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There is no shame in not knowing; the shame lies in not finding out